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2026 Volume 41 Issue 2
2026, 41(2): 1-13
doi: 10.12461/PKU.DXHX202502023
Abstract:
Amid global climate change and the ongoing energy transition, reducing greenhouse gas emissions, particularly carbon dioxide (CO2), has become a major challenge for the international community. The conventional reliance on fossil fuels exacerbates the greenhouse effect and depletes energy resources. Therefore, the development of green technologies capable of converting CO2 into high-value-added chemicals and fuels is crucial for achieving a circular carbon economy and sustainable development. Electrocatalytic CO2 conversion, an innovative and environmentally friendly approach, has garnered increasing attention from both academia and industry. This technology utilizes electrochemical methods to convert atmospheric CO2 into valuable chemicals such as hydrocarbons, alcohols, and acids through specific electrocatalysts. These products hold great potential for applications in energy, materials, and chemical industries. This paper reviews recent advancements in electrocatalytic CO2 conversion, discusses key scientific challenges and technical obstacles, and explores future development trends, aiming to provide theoretical insights and practical guidance for advancing its commercialization and industrial implementation.
Amid global climate change and the ongoing energy transition, reducing greenhouse gas emissions, particularly carbon dioxide (CO2), has become a major challenge for the international community. The conventional reliance on fossil fuels exacerbates the greenhouse effect and depletes energy resources. Therefore, the development of green technologies capable of converting CO2 into high-value-added chemicals and fuels is crucial for achieving a circular carbon economy and sustainable development. Electrocatalytic CO2 conversion, an innovative and environmentally friendly approach, has garnered increasing attention from both academia and industry. This technology utilizes electrochemical methods to convert atmospheric CO2 into valuable chemicals such as hydrocarbons, alcohols, and acids through specific electrocatalysts. These products hold great potential for applications in energy, materials, and chemical industries. This paper reviews recent advancements in electrocatalytic CO2 conversion, discusses key scientific challenges and technical obstacles, and explores future development trends, aiming to provide theoretical insights and practical guidance for advancing its commercialization and industrial implementation.
2026, 41(2): 14-20
doi: 10.12461/PKU.DXHX202501014
Abstract:
Chemistry is a powerful force in transforming nature. To help students develop a correct understanding of chemistry, our teaching team has expanded the curriculum by using familiar anime plots as a starting point. We selected the rich chemical concepts embedded in anime and applied them to chemistry education. The teaching content is designed around key themes such as chemical elements and anime characters, chemical reactions and anime plot development, and more. The curriculum progresses from basic concepts to more advanced topics, covering everything from everyday life to industrial practices. This approach demonstrates the problem-solving process in chemistry while enhancing students' comprehensive and innovative abilities.
Chemistry is a powerful force in transforming nature. To help students develop a correct understanding of chemistry, our teaching team has expanded the curriculum by using familiar anime plots as a starting point. We selected the rich chemical concepts embedded in anime and applied them to chemistry education. The teaching content is designed around key themes such as chemical elements and anime characters, chemical reactions and anime plot development, and more. The curriculum progresses from basic concepts to more advanced topics, covering everything from everyday life to industrial practices. This approach demonstrates the problem-solving process in chemistry while enhancing students' comprehensive and innovative abilities.
2026, 41(2): 21-27
doi: 10.12461/PKU.DXHX202501021
Abstract:
In the context of new quality productive forces, societal development and industrial changes present new challenges for the training of chemical professionals, placing higher demands on universities in the teaching of the Principles of Chemical Engineering course. Leveraging 3D-printed models of chemical unit operation equipment, the teaching team proposes a reform strategy centered on these models. By utilizing the creativity and digital capabilities of 3D printing technology, this approach integrates the teaching of chemical unit operations with the teaching of chemical principles and theories. This method effectively enhances students' overall abilities and fosters their ideological and political literacy. According to a questionnaire survey, students report that the implementation of this method aids their learning in the following areas: increased learning interest (18%), improved spatial imagination (18%), better intuitive understanding of abstract concepts (16%), and enhanced practical operation skills (15%).
In the context of new quality productive forces, societal development and industrial changes present new challenges for the training of chemical professionals, placing higher demands on universities in the teaching of the Principles of Chemical Engineering course. Leveraging 3D-printed models of chemical unit operation equipment, the teaching team proposes a reform strategy centered on these models. By utilizing the creativity and digital capabilities of 3D printing technology, this approach integrates the teaching of chemical unit operations with the teaching of chemical principles and theories. This method effectively enhances students' overall abilities and fosters their ideological and political literacy. According to a questionnaire survey, students report that the implementation of this method aids their learning in the following areas: increased learning interest (18%), improved spatial imagination (18%), better intuitive understanding of abstract concepts (16%), and enhanced practical operation skills (15%).
2026, 41(2): 28-35
doi: 10.12461/PKU.DXHX202501015
Abstract:
Inorganic chemistry experiments aim to cultivate students' fundamental experimental skills, scientific thinking, and a positive scientific attitude, including independent thinking, problem analysis, and problem-solving. Based on the issues and shortcomings observed in college students' performance in chemistry experiment skills competitions, this paper presents the teaching practices of the inorganic chemistry experiment course at our university. The approach is based on a comprehensive, problem-driven, blended teaching reform, which addresses aspects such as teaching resources, teaching methods, the implementation of blended teaching, and course performance assessment. The results of the teaching reform are also discussed.
Inorganic chemistry experiments aim to cultivate students' fundamental experimental skills, scientific thinking, and a positive scientific attitude, including independent thinking, problem analysis, and problem-solving. Based on the issues and shortcomings observed in college students' performance in chemistry experiment skills competitions, this paper presents the teaching practices of the inorganic chemistry experiment course at our university. The approach is based on a comprehensive, problem-driven, blended teaching reform, which addresses aspects such as teaching resources, teaching methods, the implementation of blended teaching, and course performance assessment. The results of the teaching reform are also discussed.
2026, 41(2): 36-44
doi: 10.12461/PKU.DXHX202502040
Abstract:
Guided by the principles of effective teaching and in response to the challenges encountered in inorganic chemistry courses at vocational colleges, a blended learning reform plan has been developed across four key areas: optimizing and integrating course content, developing and enhancing online course platforms, reforming and innovating teaching methods, and improving course evaluation systems. Practical implementation has demonstrated that this teaching model broadens learning pathways, improves learning efficiency, and fosters positive learning habits, leading to favorable teaching outcomes.
Guided by the principles of effective teaching and in response to the challenges encountered in inorganic chemistry courses at vocational colleges, a blended learning reform plan has been developed across four key areas: optimizing and integrating course content, developing and enhancing online course platforms, reforming and innovating teaching methods, and improving course evaluation systems. Practical implementation has demonstrated that this teaching model broadens learning pathways, improves learning efficiency, and fosters positive learning habits, leading to favorable teaching outcomes.
2026, 41(2): 45-53
doi: 10.12461/PKU.DXHX202502025
Abstract:
This article explores the ideological and political elements embedded in the teaching of elemental chemistry, using mercury and its compounds as a case study. By analyzing the advantages and disadvantages of mercury, it aims to foster the development of a correct perspective on elements. Key values such as national cultural confidence, social responsibility, environmental awareness, and ecological civilization are seamlessly integrated into the classroom teaching process. This approach is designed to cultivate students’ innovative thinking, scientific spirit, patriotism, and environmental consciousness. The integration of professional teaching with ideological and political education, as well as the combination of explicit and implicit education, creates a synergistic effect. The objective is to achieve the simultaneous alignment of knowledge dissemination and value guidance.
This article explores the ideological and political elements embedded in the teaching of elemental chemistry, using mercury and its compounds as a case study. By analyzing the advantages and disadvantages of mercury, it aims to foster the development of a correct perspective on elements. Key values such as national cultural confidence, social responsibility, environmental awareness, and ecological civilization are seamlessly integrated into the classroom teaching process. This approach is designed to cultivate students’ innovative thinking, scientific spirit, patriotism, and environmental consciousness. The integration of professional teaching with ideological and political education, as well as the combination of explicit and implicit education, creates a synergistic effect. The objective is to achieve the simultaneous alignment of knowledge dissemination and value guidance.
2026, 41(2): 54-58
doi: 10.12461/PKU.DXHX202502037
Abstract:
This paper examines the pivotal role of virtual experiments in cultivating top innovative talents, using the “Bioinspired Superhydrophobic Interface Exploration and Design” virtual simulation experiment at Beihang University as a case study. The study shows that well-designed virtual experiment courses significantly enhance students’ practical skills and innovative abilities. This paper analyzes the integration of virtual experiments into the curriculum and highlights their positive impact on fostering students’ scientific research thinking, teamwork, and hands-on skills. The findings demonstrate that virtual experiments not only overcome the limitations of traditional experimental teaching but also stimulate students’ innovative potential through interdisciplinary integration and realistic scenario simulations, ultimately contributing to the development of top-tier talent with international competitiveness.
This paper examines the pivotal role of virtual experiments in cultivating top innovative talents, using the “Bioinspired Superhydrophobic Interface Exploration and Design” virtual simulation experiment at Beihang University as a case study. The study shows that well-designed virtual experiment courses significantly enhance students’ practical skills and innovative abilities. This paper analyzes the integration of virtual experiments into the curriculum and highlights their positive impact on fostering students’ scientific research thinking, teamwork, and hands-on skills. The findings demonstrate that virtual experiments not only overcome the limitations of traditional experimental teaching but also stimulate students’ innovative potential through interdisciplinary integration and realistic scenario simulations, ultimately contributing to the development of top-tier talent with international competitiveness.
2026, 41(2): 59-64
doi: 10.12461/PKU.DXHX202502116
Abstract:
To address the challenges in the ideological and political education of instrumental analysis courses, such as the lack of clear guiding principles, insufficient integration of ideological elements within course content, and difficulties in achieving effective educational outcomes, a three-step progressive model for course-based ideological and political education has been developed. Firstly, by aligning the specific characteristics of the course, a coherent ideological and political education framework centered around the principles of truth-seeking, practicality, and innovation is established. Then, the integration points of Ideological and political education in the course have been excavated through the layout of two dimensions of explicit knowledge and implicit values. thirdly, by means of knowledge crowdfunding, group discussion and project-based tasks, the ideological and political education of the course has been effectively promoted into the brain and heart, and finally formed a three-step and advanced ideological and political education mode that can be copied and easily promoted. At present, it has been successfully implemented in over 20 universities and several primary and secondary schools in Gansu Province and beyond.
To address the challenges in the ideological and political education of instrumental analysis courses, such as the lack of clear guiding principles, insufficient integration of ideological elements within course content, and difficulties in achieving effective educational outcomes, a three-step progressive model for course-based ideological and political education has been developed. Firstly, by aligning the specific characteristics of the course, a coherent ideological and political education framework centered around the principles of truth-seeking, practicality, and innovation is established. Then, the integration points of Ideological and political education in the course have been excavated through the layout of two dimensions of explicit knowledge and implicit values. thirdly, by means of knowledge crowdfunding, group discussion and project-based tasks, the ideological and political education of the course has been effectively promoted into the brain and heart, and finally formed a three-step and advanced ideological and political education mode that can be copied and easily promoted. At present, it has been successfully implemented in over 20 universities and several primary and secondary schools in Gansu Province and beyond.
2026, 41(2): 65-72
doi: 10.12461/PKU.DXHX202502125
Abstract:
To explore the application of project-based learning in the training of outstanding chemistry students in the Instrumental Analysis course, a novel approach was proposed to extend project activities from theoretical instruction to practical project-based teaching. Instructors designed projects that incorporate authentic scenarios, align with current societal and scientific issues, integrate interdisciplinary concepts, and serve an educational function by providing guidance, supervision, and support throughout the learning process. Under project-driven learning, students engage in critical thinking, interactive collaboration, knowledge integration, and innovative refinement. Practical implementation has demonstrated that this teaching model effectively enhances outstanding students’ ability for self-directed learning and innovative ability.
To explore the application of project-based learning in the training of outstanding chemistry students in the Instrumental Analysis course, a novel approach was proposed to extend project activities from theoretical instruction to practical project-based teaching. Instructors designed projects that incorporate authentic scenarios, align with current societal and scientific issues, integrate interdisciplinary concepts, and serve an educational function by providing guidance, supervision, and support throughout the learning process. Under project-driven learning, students engage in critical thinking, interactive collaboration, knowledge integration, and innovative refinement. Practical implementation has demonstrated that this teaching model effectively enhances outstanding students’ ability for self-directed learning and innovative ability.
2026, 41(2): 73-81
doi: 10.12461/PKU.DXHX202503047
Abstract:
An integrated “problem-guided preview and anomaly-driven inquiry” teaching model was developed through experiment in elemental chemistry to address two key challenges in inorganic chemistry experimental teaching at local universities: the lack of continuity with high school chemistry foundations and insufficient integration with advanced experimental designs. Problem-guided preview resources were created to help students standardize basic operations and clarify experimental principles, thereby bridging the knowledge and skill gap between secondary and tertiary education. The transformation of “anomaly-to-inquiry” and the coherent approach for fostering scientific thinking, consisting of “cognitive conflict → variable analysis → scheme design → theoretical tracing”, were established to overcome the competency gap between basic and advanced experimentation. Practical results demonstrated that this model facilitated a role transformation (students: from “passive executors” to “active investigators”; teachers: from “knowledge lecturers” to “thinking cultivators”) and improved student competencies (the excellent rate increased from 2.6% to 9.8%). This model offers a paradigm for experimental teaching reform at local universities.
An integrated “problem-guided preview and anomaly-driven inquiry” teaching model was developed through experiment in elemental chemistry to address two key challenges in inorganic chemistry experimental teaching at local universities: the lack of continuity with high school chemistry foundations and insufficient integration with advanced experimental designs. Problem-guided preview resources were created to help students standardize basic operations and clarify experimental principles, thereby bridging the knowledge and skill gap between secondary and tertiary education. The transformation of “anomaly-to-inquiry” and the coherent approach for fostering scientific thinking, consisting of “cognitive conflict → variable analysis → scheme design → theoretical tracing”, were established to overcome the competency gap between basic and advanced experimentation. Practical results demonstrated that this model facilitated a role transformation (students: from “passive executors” to “active investigators”; teachers: from “knowledge lecturers” to “thinking cultivators”) and improved student competencies (the excellent rate increased from 2.6% to 9.8%). This model offers a paradigm for experimental teaching reform at local universities.
Chemistry Frontiers-Intelligent Educational Technologies Collaborate to Construct CO2 Teaching Units
2026, 41(2): 82-94
doi: 10.12461/PKU.DXHX202503014
Abstract:
The discipline of chemistry is constantly making significant strides in the pursuit of carbon emission reduction and resourcing through molecular design and process regulation. Incorporating “dual-carbon” frontier knowledge into undergraduate education is crucial for driving reform in chemistry teaching. This study proposes a three-dimensional progressive framework that integrates “knowledge system restructuring, intelligent platform enhancement, and self-directed inquiry advancement.” This approach transcends the temporal and spatial limitations of traditional classrooms, creating an immersive, whole-process training model. It enables students to make a cognitive leap from knowledge internalization to innovative thinking, significantly enhancing their innovative capabilities and fostering a stronger sense of mission within the discipline.
The discipline of chemistry is constantly making significant strides in the pursuit of carbon emission reduction and resourcing through molecular design and process regulation. Incorporating “dual-carbon” frontier knowledge into undergraduate education is crucial for driving reform in chemistry teaching. This study proposes a three-dimensional progressive framework that integrates “knowledge system restructuring, intelligent platform enhancement, and self-directed inquiry advancement.” This approach transcends the temporal and spatial limitations of traditional classrooms, creating an immersive, whole-process training model. It enables students to make a cognitive leap from knowledge internalization to innovative thinking, significantly enhancing their innovative capabilities and fostering a stronger sense of mission within the discipline.
2026, 41(2): 95-102
doi: 10.12461/PKU.DXHX202503108
Abstract:
Inorganic chemistry presents considerable challenges for both learners and educators due to its extensive content and obscure patterns. Establishing a well-structured knowledge framework serves as a crucial approach to address these difficulties. Using alkali metal instruction as a case study, this study develops a comprehensive knowledge framework template for elemental chemistry in inorganic education, distills essential concepts from the alkali metals chapter, and elucidates the fundamental logical relationships among these concepts. The paper introduces the novel academic proposition that “superoxides are primarily formed during the initial reaction between reactive metals and oxygen,” subsequently proposing a three-step reaction mechanism at the microscopic level. This approach establishes a new knowledge paradigm for understanding alkali metal-oxygen reactions based on their intrinsic characteristics, leading to significant improvements in pedagogical outcomes. The findings demonstrate that constructing a coherent knowledge framework not only enhances teaching effectiveness but also facilitates academic discoveries through cognitive stimulation, offering innovative perspectives for both research and instruction in inorganic chemistry.
Inorganic chemistry presents considerable challenges for both learners and educators due to its extensive content and obscure patterns. Establishing a well-structured knowledge framework serves as a crucial approach to address these difficulties. Using alkali metal instruction as a case study, this study develops a comprehensive knowledge framework template for elemental chemistry in inorganic education, distills essential concepts from the alkali metals chapter, and elucidates the fundamental logical relationships among these concepts. The paper introduces the novel academic proposition that “superoxides are primarily formed during the initial reaction between reactive metals and oxygen,” subsequently proposing a three-step reaction mechanism at the microscopic level. This approach establishes a new knowledge paradigm for understanding alkali metal-oxygen reactions based on their intrinsic characteristics, leading to significant improvements in pedagogical outcomes. The findings demonstrate that constructing a coherent knowledge framework not only enhances teaching effectiveness but also facilitates academic discoveries through cognitive stimulation, offering innovative perspectives for both research and instruction in inorganic chemistry.
2026, 41(2): 103-110
doi: 10.12461/PKU.DXHX202503034
Abstract:
This paper discusses the development experience of the graduate-level course Comprehensive Instrumental Analysis Experiment offered by the Chemistry Experimental Teaching Center at the University of Science and Technology of China. In response to the high demand for course enrollment and the limited allocation of teaching resources such as instruments, as well as the diverse future research directions of graduate students, which require various instruments for study, the course team implemented reforms in precision teaching. These reforms have effectively addressed challenges encountered during the teaching process and have played a significant role in enhancing students’ scientific research and innovation capabilities. This paper provides a detailed introduction to the division of teaching modules, the design of various teaching components, as well as attempts and reflections on course assessment and the integration of ideological and political education into the curriculum.
This paper discusses the development experience of the graduate-level course Comprehensive Instrumental Analysis Experiment offered by the Chemistry Experimental Teaching Center at the University of Science and Technology of China. In response to the high demand for course enrollment and the limited allocation of teaching resources such as instruments, as well as the diverse future research directions of graduate students, which require various instruments for study, the course team implemented reforms in precision teaching. These reforms have effectively addressed challenges encountered during the teaching process and have played a significant role in enhancing students’ scientific research and innovation capabilities. This paper provides a detailed introduction to the division of teaching modules, the design of various teaching components, as well as attempts and reflections on course assessment and the integration of ideological and political education into the curriculum.
2026, 41(2): 111-118
doi: 10.12461/PKU.DXHX202503094
Abstract:
Under the context of Emerging Engineering Education, Inorganic and Analytical Chemistry, as a science course oriented towards engineering disciplines, serves as a foundational, theoretical, interdisciplinary, and transitional compulsory course for first-year undergraduates. While emphasizing scientific fundamentals characteristic of science curricula, the traditional course structure lacks engineering conceptual frameworks and inadequately addresses the cultivation of core competencies in “applying scientific principles to solve practical problems”—a critical requirement for cultivating outstanding engineers. Our teaching-research group has implemented comprehensive reforms through the pedagogical philosophy transformation, curriculum content restructuring, instructional methodology innovation, and multidimensional assessment system establishment to integrate engineering thinking into the course. These include the incorporation of problem definition/decomposition, systematic design principles, iterative optimization processes, and engineering ethics considerations. This curricular innovation bridges scientific competency development with engineering capability cultivation, elevating course objectives from pure scientific training to integrated engineering education. The reformed curriculum establishes a robust foundation for nurturing next-generation engineering talents aligned with New Engineering Education requirements.
Under the context of Emerging Engineering Education, Inorganic and Analytical Chemistry, as a science course oriented towards engineering disciplines, serves as a foundational, theoretical, interdisciplinary, and transitional compulsory course for first-year undergraduates. While emphasizing scientific fundamentals characteristic of science curricula, the traditional course structure lacks engineering conceptual frameworks and inadequately addresses the cultivation of core competencies in “applying scientific principles to solve practical problems”—a critical requirement for cultivating outstanding engineers. Our teaching-research group has implemented comprehensive reforms through the pedagogical philosophy transformation, curriculum content restructuring, instructional methodology innovation, and multidimensional assessment system establishment to integrate engineering thinking into the course. These include the incorporation of problem definition/decomposition, systematic design principles, iterative optimization processes, and engineering ethics considerations. This curricular innovation bridges scientific competency development with engineering capability cultivation, elevating course objectives from pure scientific training to integrated engineering education. The reformed curriculum establishes a robust foundation for nurturing next-generation engineering talents aligned with New Engineering Education requirements.
2026, 41(2): 119-122
doi: 10.12461/PKU.DXHX202503063
Abstract:
This paper is proposed in the context of limited class hours. Aiming at the problems existing in the teaching process of "hybrid orbital theory" in general chemistry, the "Five-Question" model is introduced to guide students' deep thinking and understanding of this theory. Through analyzing the theoretical basis, hybridization conditions, reasons, principles, and types of hybrid orbitals, it elaborates on how to use this model to stimulate students' active thinking, enhance teaching intuitiveness and convenience, and cultivate students' problem-solving abilities and scientific thinking.
This paper is proposed in the context of limited class hours. Aiming at the problems existing in the teaching process of "hybrid orbital theory" in general chemistry, the "Five-Question" model is introduced to guide students' deep thinking and understanding of this theory. Through analyzing the theoretical basis, hybridization conditions, reasons, principles, and types of hybrid orbitals, it elaborates on how to use this model to stimulate students' active thinking, enhance teaching intuitiveness and convenience, and cultivate students' problem-solving abilities and scientific thinking.
2026, 41(2): 123-130
doi: 10.12461/PKU.DXHX202503083
Abstract:
As a fundamental theoretical course in higher education, College Chemistry serves as crucial pathway for cultivating well-rounded talents. This study conducts an in-depth analysis of existing challenges in teaching the analytical chemistry component of this course from both student and faculty perspectives. Focusing on four key dimensions: instructional content, pedagogical approaches, learning environment, and assessment systems-we propose a systematic model for educational improvement and innovation. Integrating cutting-edge scientific achievements and industrial developments into teaching practice. Constructing knowledge graphs using artificial intelligence. Our approach aims to address dual challenges faced by ‘both instructors and learners, enhancing faculty's interdisciplinary teaching competencies and developing students’ chemical thinking. The model encourages students to apply chemical knowledge to solve discipline-specific practical problems, while fostering cultural confidence through deeper understanding of local history, culture, and values.
As a fundamental theoretical course in higher education, College Chemistry serves as crucial pathway for cultivating well-rounded talents. This study conducts an in-depth analysis of existing challenges in teaching the analytical chemistry component of this course from both student and faculty perspectives. Focusing on four key dimensions: instructional content, pedagogical approaches, learning environment, and assessment systems-we propose a systematic model for educational improvement and innovation. Integrating cutting-edge scientific achievements and industrial developments into teaching practice. Constructing knowledge graphs using artificial intelligence. Our approach aims to address dual challenges faced by ‘both instructors and learners, enhancing faculty's interdisciplinary teaching competencies and developing students’ chemical thinking. The model encourages students to apply chemical knowledge to solve discipline-specific practical problems, while fostering cultural confidence through deeper understanding of local history, culture, and values.
2026, 41(2): 131-139
doi: 10.12461/PKU.DXHX202501013
Abstract:
Organic Chemistry, a mandatory foundational course for first-year Animal Medicine major, effectively integrates core principles of basic chemistry and medical science. This course plays a pivotal role in establishing students' comprehensive chemical knowledge framework, while fostering their analytical competencies, experimental techniques, and innovative thinking. Addressing the challenge that approximately one-quarter of students possess limited high school chemistry background, our teaching team has implemented a student-centered, teacher-guided approach. We have developed a blended learning model that combines online and offline instruction, incorporating both fundamental and advanced knowledge points through flipped classroom methodology and group discussions. This pedagogical strategy aims to facilitate students’ academic progression by overcoming learning barriers through targeted instruction. The model not only ensures efficient knowledge transfer but also emphasizes holistic skill development and value formation. Using “Aromatic Hydrocarbons and Their Medical Applications” as a case study, this paper illustrates the design framework and implementation strategies of this approach, which has demonstrated significant educational outcomes.
Organic Chemistry, a mandatory foundational course for first-year Animal Medicine major, effectively integrates core principles of basic chemistry and medical science. This course plays a pivotal role in establishing students' comprehensive chemical knowledge framework, while fostering their analytical competencies, experimental techniques, and innovative thinking. Addressing the challenge that approximately one-quarter of students possess limited high school chemistry background, our teaching team has implemented a student-centered, teacher-guided approach. We have developed a blended learning model that combines online and offline instruction, incorporating both fundamental and advanced knowledge points through flipped classroom methodology and group discussions. This pedagogical strategy aims to facilitate students’ academic progression by overcoming learning barriers through targeted instruction. The model not only ensures efficient knowledge transfer but also emphasizes holistic skill development and value formation. Using “Aromatic Hydrocarbons and Their Medical Applications” as a case study, this paper illustrates the design framework and implementation strategies of this approach, which has demonstrated significant educational outcomes.
2026, 41(2): 140-145
doi: 10.12461/PKU.DXHX202502041
Abstract:
In alignment with the requirements of “New Medical Science” development and leveraging the multidisciplinary strengths of Nankai University, we have undertaken a comprehensive reform of the “Chemical Biology” course. This initiative involved optimizing and revising the curriculum content, implementing a student-centered hybrid teaching model, and enhancing the diversified assessment system. Furthermore, we have reinforced the foundational role of chemical biology in the advancement of “New Medical Science”. These pedagogical innovations are designed to cultivate interdisciplinary, top-tier, and innovative talents essential for the “New Medical Science” paradigm.
In alignment with the requirements of “New Medical Science” development and leveraging the multidisciplinary strengths of Nankai University, we have undertaken a comprehensive reform of the “Chemical Biology” course. This initiative involved optimizing and revising the curriculum content, implementing a student-centered hybrid teaching model, and enhancing the diversified assessment system. Furthermore, we have reinforced the foundational role of chemical biology in the advancement of “New Medical Science”. These pedagogical innovations are designed to cultivate interdisciplinary, top-tier, and innovative talents essential for the “New Medical Science” paradigm.
2026, 41(2): 146-153
doi: 10.12461/PKU.DXHX202412149
Abstract:
In response to the characteristics and challenges of the Physical Chemistry course, the authors have developed innovative course resources by extracting and integrating the introduction, summary, and exercise components from traditional classroom teaching with interdisciplinary cases relevant to the Food Science and Engineering major. Through the implementation of modular teaching methods and a blended learning approach, this initiative has effectively reduced the classroom burden, significantly enhanced students’ learning enthusiasm, and improved their ability to address real-world problems. This teaching innovation has garnered widespread recognition and strong support from both faculty and students in the Food Science and Engineering major.
In response to the characteristics and challenges of the Physical Chemistry course, the authors have developed innovative course resources by extracting and integrating the introduction, summary, and exercise components from traditional classroom teaching with interdisciplinary cases relevant to the Food Science and Engineering major. Through the implementation of modular teaching methods and a blended learning approach, this initiative has effectively reduced the classroom burden, significantly enhanced students’ learning enthusiasm, and improved their ability to address real-world problems. This teaching innovation has garnered widespread recognition and strong support from both faculty and students in the Food Science and Engineering major.
2026, 41(2): 154-160
doi: 10.12461/PKU.DXHX202502095
Abstract:
This study addresses the pedagogical challenges encountered in polymer course instruction at the College of Chemistry and Chemical Engineering, Chongqing University. Through the establishment of an interdisciplinary teaching team spanning multiple colleges, we have developed a comprehensive curriculum system encompassing prerequisite courses, core courses, and advanced electives. The teaching content has been systematically integrated to eliminate redundancy and enhance coherence. Innovative pedagogical approaches, including case-based teaching, have been implemented to stimulate student engagement, while practical teaching components have been strengthened to improve students’ competencies. The introduction of project-based courses has effectively facilitated the integration of theoretical knowledge with practical applications. The reform initiatives have yielded significant outcomes, evidenced by substantial improvements in students’ academic performance (GPA), professional development of faculty members, and the program’s attainment of an A+ rating in the 2023 Chongqing Municipal Undergraduate Program Evaluation.
This study addresses the pedagogical challenges encountered in polymer course instruction at the College of Chemistry and Chemical Engineering, Chongqing University. Through the establishment of an interdisciplinary teaching team spanning multiple colleges, we have developed a comprehensive curriculum system encompassing prerequisite courses, core courses, and advanced electives. The teaching content has been systematically integrated to eliminate redundancy and enhance coherence. Innovative pedagogical approaches, including case-based teaching, have been implemented to stimulate student engagement, while practical teaching components have been strengthened to improve students’ competencies. The introduction of project-based courses has effectively facilitated the integration of theoretical knowledge with practical applications. The reform initiatives have yielded significant outcomes, evidenced by substantial improvements in students’ academic performance (GPA), professional development of faculty members, and the program’s attainment of an A+ rating in the 2023 Chongqing Municipal Undergraduate Program Evaluation.
2026, 41(2): 161-167
doi: 10.12461/PKU.DXHX202502056
Abstract:
In the wave of the new technological revolution and industrial transformation, artificial intelligence is significantly reshaping the ecosystem of higher education. Under this new paradigm, the training of chemistry professionals requires an innovative approach to cultivate high-quality innovative talents equipped with both foundational knowledge in basic sciences, practical innovation capabilities, and industrial transformation thinking. Thus, it’s imperative to establish this “Integration of Science, Education, and Innovation” paradigm. This paper systematically analyzes emerging requirements for chemistry talent development and proposes a training model featuring
In the wave of the new technological revolution and industrial transformation, artificial intelligence is significantly reshaping the ecosystem of higher education. Under this new paradigm, the training of chemistry professionals requires an innovative approach to cultivate high-quality innovative talents equipped with both foundational knowledge in basic sciences, practical innovation capabilities, and industrial transformation thinking. Thus, it’s imperative to establish this “Integration of Science, Education, and Innovation” paradigm. This paper systematically analyzes emerging requirements for chemistry talent development and proposes a training model featuring
2026, 41(2): 168-177
doi: 10.12461/PKU.DXHX202503133
Abstract:
Rooted in Tianjin University’s Double First-Class discipline construction, this study targets the cultivation of top innovative talents in chemistry. To address current challenges in applied chemistry education, we propose multi-dimensional collaborative strategies for teaching reform. The systematic reform aims to build an open, flexible, and efficient talent cultivation system that develops exceptional individuals possessing international perspectives, innovative thinking, and practical abilities to meet national sci-tech development needs. Practice demonstrates this approach effectively advances world-class discipline development while significantly improving students’ research competencies and overall competitiveness, providing transferable experience for peer institutions.
Rooted in Tianjin University’s Double First-Class discipline construction, this study targets the cultivation of top innovative talents in chemistry. To address current challenges in applied chemistry education, we propose multi-dimensional collaborative strategies for teaching reform. The systematic reform aims to build an open, flexible, and efficient talent cultivation system that develops exceptional individuals possessing international perspectives, innovative thinking, and practical abilities to meet national sci-tech development needs. Practice demonstrates this approach effectively advances world-class discipline development while significantly improving students’ research competencies and overall competitiveness, providing transferable experience for peer institutions.
2026, 41(2): 178-189
doi: 10.12461/PKU.DXHX202502105
Abstract:
The massive emission of carbon dioxide (CO2) has led to a series of environmental challenges; however, CO2 is also a valuable carbon resource. As a result, capturing CO2 and converting it into high-value chemicals has become an urgent area of research in both science and industry. Chemically, CO2 is considered a stable, safe, and abundant C1 resource. Converting CO2 into high-value chemicals not only addresses the issue of CO2 emissions but also facilitates its resource utilization. Among the various methods, the catalytic addition of CO2 to epoxides for the preparation of high-value cyclic carbonates is a promising strategy for CO2 utilization. This process is atomically efficient (100%), generates no by-products, and operates under mild reaction conditions. This review discusses the chemical utilization pathways of CO2, emphasizes efficient catalysts for the CO2 cycloaddition reaction, compares the catalytic activities of different types of catalysts, and concludes with a summary and outlook on the progress in CO2 cycloaddition research.
The massive emission of carbon dioxide (CO2) has led to a series of environmental challenges; however, CO2 is also a valuable carbon resource. As a result, capturing CO2 and converting it into high-value chemicals has become an urgent area of research in both science and industry. Chemically, CO2 is considered a stable, safe, and abundant C1 resource. Converting CO2 into high-value chemicals not only addresses the issue of CO2 emissions but also facilitates its resource utilization. Among the various methods, the catalytic addition of CO2 to epoxides for the preparation of high-value cyclic carbonates is a promising strategy for CO2 utilization. This process is atomically efficient (100%), generates no by-products, and operates under mild reaction conditions. This review discusses the chemical utilization pathways of CO2, emphasizes efficient catalysts for the CO2 cycloaddition reaction, compares the catalytic activities of different types of catalysts, and concludes with a summary and outlook on the progress in CO2 cycloaddition research.
2026, 41(2): 190-196
doi: 10.12461/PKU.DXHX202503006
Abstract:
The increasingly severe “greenhouse effect” has made the resource utilization of carbon dioxide (CO2) an urgent priority. Compared to other alternative approaches, electrochemical CO2reduction to high-value-added fuels and chemicals powered by renewable electricity offers advantages such as mild operating conditions, environmental friendliness, and high efficiency. This review focuses on CO2-to-ethylene conversion, as ethylene has the largest market demand among CO2reduction products. We first provide a brief introduction to the fundamental reaction mechanisms. Next, we discuss advanced catalyst modification strategies and introduce four representative electrolyzers. We then summarize the current progress in CO2-to-ethylene conversion and highlight the existing scientific and technological challenges. Finally, we conclude with an outlook on the industrial application prospects of CO2-to-ethylene conversion.
The increasingly severe “greenhouse effect” has made the resource utilization of carbon dioxide (CO2) an urgent priority. Compared to other alternative approaches, electrochemical CO2reduction to high-value-added fuels and chemicals powered by renewable electricity offers advantages such as mild operating conditions, environmental friendliness, and high efficiency. This review focuses on CO2-to-ethylene conversion, as ethylene has the largest market demand among CO2reduction products. We first provide a brief introduction to the fundamental reaction mechanisms. Next, we discuss advanced catalyst modification strategies and introduce four representative electrolyzers. We then summarize the current progress in CO2-to-ethylene conversion and highlight the existing scientific and technological challenges. Finally, we conclude with an outlook on the industrial application prospects of CO2-to-ethylene conversion.
2026, 41(2): 197-207
doi: 10.12461/PKU.DXHX202503012
Abstract:
The greenhouse effect poses one of the significant challenges to humanity. Among the various greenhouse gases, CO2 accounts for 60% to 70% of the total contribution. Importantly, CO2 is thermodynamically stable and chemically inert, making its conversion a difficult task. Moreover, CO2 emissions will have a long-term impact on the environment. On the other hand, CH4 contributes approximately 20% to the overall greenhouse effect. Despite its relatively low concentration, a signal CH4 molecule has a global warming potential 25 times greater than that of a CO2 molecule. To mitigate the increasing concentrations of CO2 and CH4, many efforts have been developed. Among these, the reforming of CH4 and CO2 to syngas is a promising approach. This process not only helps in addressing climate change but also enables the production of value-added chemicals. In this respect, this reaction holds important theoretical significance and practical value.
The greenhouse effect poses one of the significant challenges to humanity. Among the various greenhouse gases, CO2 accounts for 60% to 70% of the total contribution. Importantly, CO2 is thermodynamically stable and chemically inert, making its conversion a difficult task. Moreover, CO2 emissions will have a long-term impact on the environment. On the other hand, CH4 contributes approximately 20% to the overall greenhouse effect. Despite its relatively low concentration, a signal CH4 molecule has a global warming potential 25 times greater than that of a CO2 molecule. To mitigate the increasing concentrations of CO2 and CH4, many efforts have been developed. Among these, the reforming of CH4 and CO2 to syngas is a promising approach. This process not only helps in addressing climate change but also enables the production of value-added chemicals. In this respect, this reaction holds important theoretical significance and practical value.
2026, 41(2): 208-217
doi: 10.12461/PKU.DXHX202503011
Abstract:
Scientific frontier achievements should be integrated into classroom teaching, aligning with the urgent needs of national science and technology development and environmental protection. A strong sense of social responsibility should permeate the entire curriculum. This teaching approach not only enriches students' professional knowledge and broadens their academic horizons but also fosters scientific thinking, innovation skills, and the ability to apply knowledge. It has significantly stimulated students’ curiosity and enthusiasm for scientific research. As a key component of inorganic chemistry in undergraduate education, coordination compounds have long been considered both a focal point and a challenge in inorganic chemistry due to their diverse types and wide-ranging properties. Recently, metal-organic frameworks (MOFs) have garnered attention for their unique structural characteristics, demonstrating significant potential for CO2 capture and green catalytic conversion. This has made MOFs a research hotspot both domestically and internationally. By combining the latest scientific research with accessible reaction examples, this teaching material introduces undergraduate students to recent advancements in the efficient catalytic conversion of CO2 into high-value fine chemicals using classical porous MOFs.
Scientific frontier achievements should be integrated into classroom teaching, aligning with the urgent needs of national science and technology development and environmental protection. A strong sense of social responsibility should permeate the entire curriculum. This teaching approach not only enriches students' professional knowledge and broadens their academic horizons but also fosters scientific thinking, innovation skills, and the ability to apply knowledge. It has significantly stimulated students’ curiosity and enthusiasm for scientific research. As a key component of inorganic chemistry in undergraduate education, coordination compounds have long been considered both a focal point and a challenge in inorganic chemistry due to their diverse types and wide-ranging properties. Recently, metal-organic frameworks (MOFs) have garnered attention for their unique structural characteristics, demonstrating significant potential for CO2 capture and green catalytic conversion. This has made MOFs a research hotspot both domestically and internationally. By combining the latest scientific research with accessible reaction examples, this teaching material introduces undergraduate students to recent advancements in the efficient catalytic conversion of CO2 into high-value fine chemicals using classical porous MOFs.
2026, 41(2): 218-231
doi: 10.12461/PKU.DXHX202502111
Abstract:
Alkali metals find increasingly widespread applications, with their preparation and purification methods serving as exemplary cases in inorganic synthesis. Given the rapid advancement of new energy technologies, a systematic presentation of alkali metal preparation knowledge has become particularly crucial. Guided by the pedagogical principle of “learning for practical application”, this article systematically reviews the preparation and purification of alkali metals based on literature research and analysis. Special emphasis is placed on correlating chemical principles with technological processes, with particular attention given to highlighting the outstanding contributions of Chinese researchers in lithium extraction from salt lakes. This work aims to provide valuable reference for chemistry students and industry practitioners.
Alkali metals find increasingly widespread applications, with their preparation and purification methods serving as exemplary cases in inorganic synthesis. Given the rapid advancement of new energy technologies, a systematic presentation of alkali metal preparation knowledge has become particularly crucial. Guided by the pedagogical principle of “learning for practical application”, this article systematically reviews the preparation and purification of alkali metals based on literature research and analysis. Special emphasis is placed on correlating chemical principles with technological processes, with particular attention given to highlighting the outstanding contributions of Chinese researchers in lithium extraction from salt lakes. This work aims to provide valuable reference for chemistry students and industry practitioners.
2026, 41(2): 232-237
doi: 10.12461/PKU.DXHX202501010
Abstract:
Crown ethers, a distinctive class of ether compounds characterized by their unique structural features, have garnered increasing recognition in the scientific community. Recent advancements have witnessed remarkable innovations in the application of crown ethers for constructing artificial transmembrane ion transport systems. The utilization of diverse crown ether structures and assembly motifs has significantly broadened the research landscape, encompassing the development of transmembrane artificial ion channels, seawater treatment, lithium extraction from salt lakes, and battery technologies. By integrating principles from supramolecular chemistry and biology, along with interdisciplinary approaches, these novel biomimetic artificial ion transporters, distinguished by their innovative structures and unique functionalities, are poised to make substantial contributions to the pharmaceutical and chemical industries.
Crown ethers, a distinctive class of ether compounds characterized by their unique structural features, have garnered increasing recognition in the scientific community. Recent advancements have witnessed remarkable innovations in the application of crown ethers for constructing artificial transmembrane ion transport systems. The utilization of diverse crown ether structures and assembly motifs has significantly broadened the research landscape, encompassing the development of transmembrane artificial ion channels, seawater treatment, lithium extraction from salt lakes, and battery technologies. By integrating principles from supramolecular chemistry and biology, along with interdisciplinary approaches, these novel biomimetic artificial ion transporters, distinguished by their innovative structures and unique functionalities, are poised to make substantial contributions to the pharmaceutical and chemical industries.
2026, 41(2): 238-241
doi: 10.12461/PKU.DXHX202502048
Abstract:
Carbon dioxide is a major component of greenhouse gases; however, with the advancement of technology, it can be transformed into various useful forms. Through anthropomorphism, this paper introduces the diverse applications of carbon dioxide, such as its transformation into various compounds through catalytic conversion, its use as a supercritical fluid, and as an energy storage medium. This approach allows readers to understand the immense potential of carbon dioxide in an engaging way, while also planting the seeds of bold exploration in young minds, inspiring them to embrace the goal of “turning waste into treasure.”
Carbon dioxide is a major component of greenhouse gases; however, with the advancement of technology, it can be transformed into various useful forms. Through anthropomorphism, this paper introduces the diverse applications of carbon dioxide, such as its transformation into various compounds through catalytic conversion, its use as a supercritical fluid, and as an energy storage medium. This approach allows readers to understand the immense potential of carbon dioxide in an engaging way, while also planting the seeds of bold exploration in young minds, inspiring them to embrace the goal of “turning waste into treasure.”
2026, 41(2): 242-247
doi: 10.12461/PKU.DXHX202503013
Abstract:
This article comprehensively elaborates on the history, current situation, and various influences of CO2, deeply explores the physical and chemical utilization methods of CO2, and focuses on sorting out the development course of CO2 chemistry, including the key reaction mechanisms of CO2. At the same time, it describes in detail the efforts made by mankind to advance the “dual carbon” goal from different perspectives, aiming to present to readers the important role of CO2 in the evolution of the Earth, scientific research, social development, as well as human actions and explorations in response to climate change.
This article comprehensively elaborates on the history, current situation, and various influences of CO2, deeply explores the physical and chemical utilization methods of CO2, and focuses on sorting out the development course of CO2 chemistry, including the key reaction mechanisms of CO2. At the same time, it describes in detail the efforts made by mankind to advance the “dual carbon” goal from different perspectives, aiming to present to readers the important role of CO2 in the evolution of the Earth, scientific research, social development, as well as human actions and explorations in response to climate change.
2026, 41(2): 248-254
doi: 10.12461/PKU.DXHX202502018
Abstract:
The newly revised Law on the Popularization of Science and Technology has established a robust legal foundation for universities to advance science popularization efforts. Leveraging the unique and abundant resources available in higher education institutions, this paper explores the integration of science popularization into teaching, research, and other diverse educational approaches. It highlights a series of distinctive science popularization activities, including scientific innovation guidance for youth, frontier knowledge dissemination for teachers, students, and the public, and engaging chemistry enlightenment programs for children. These initiatives underscore the potential and leadership role of universities in promoting chemistry science popularization.
The newly revised Law on the Popularization of Science and Technology has established a robust legal foundation for universities to advance science popularization efforts. Leveraging the unique and abundant resources available in higher education institutions, this paper explores the integration of science popularization into teaching, research, and other diverse educational approaches. It highlights a series of distinctive science popularization activities, including scientific innovation guidance for youth, frontier knowledge dissemination for teachers, students, and the public, and engaging chemistry enlightenment programs for children. These initiatives underscore the potential and leadership role of universities in promoting chemistry science popularization.
2026, 41(2): 255-262
doi: 10.12461/PKU.DXHX202502068
Abstract:
Tea polyphenols, the primary polyphenolic compounds in tea, are responsible for its color, aroma, and health benefits. Using common tea products, we developed two innovative experiments based on tea polyphenols’ antioxidant properties and metal ion complexation: (1) “Colorful Tea Chemistry” for elementary students demonstrates antioxidant effects through color changes while introducing Chinese tea varieties and culture; (2) “Poetic Chemistry” for secondary/college students with chemistry background showcases metal ion reactions, extraction methods, and industrial applications to encourage scientific innovation. These home-friendly experiments combine safety and engagement while integrating traditional culture to enhance both scientific and cultural literacy.
Tea polyphenols, the primary polyphenolic compounds in tea, are responsible for its color, aroma, and health benefits. Using common tea products, we developed two innovative experiments based on tea polyphenols’ antioxidant properties and metal ion complexation: (1) “Colorful Tea Chemistry” for elementary students demonstrates antioxidant effects through color changes while introducing Chinese tea varieties and culture; (2) “Poetic Chemistry” for secondary/college students with chemistry background showcases metal ion reactions, extraction methods, and industrial applications to encourage scientific innovation. These home-friendly experiments combine safety and engagement while integrating traditional culture to enhance both scientific and cultural literacy.
2026, 41(2): 263-267
doi: 10.12461/PKU.DXHX202501016
Abstract:
Starch, a ubiquitous ingredient in the kitchen, can be transformed into various types of food through different chemical reactions. This article explores the role of starch in the Northeastern Chinese specialty dish, potstickers, and provides a step-by-step analysis of key chemical reactions involved, such as gelatinization, the Maillard reaction, and retrogradation. By doing so, it aims to spark readers’ curiosity about the application of organic chemistry in culinary practices.
Starch, a ubiquitous ingredient in the kitchen, can be transformed into various types of food through different chemical reactions. This article explores the role of starch in the Northeastern Chinese specialty dish, potstickers, and provides a step-by-step analysis of key chemical reactions involved, such as gelatinization, the Maillard reaction, and retrogradation. By doing so, it aims to spark readers’ curiosity about the application of organic chemistry in culinary practices.
2026, 41(2): 268-272
doi: 10.12461/PKU.DXHX202501011
Abstract:
Self-healing materials, a novel class of materials capable of repairing themselves after damage, hold immense potential for diverse applications. Through a dialogue between two university students, Dahua and Xiaoxue, this article explores the chemical principles underlying intrinsic and extrinsic self-healing mechanisms, including reversible reactions, dynamic covalent bonds, and supramolecular interactions. Additionally, it highlights the future development prospects of self-healing materials.
Self-healing materials, a novel class of materials capable of repairing themselves after damage, hold immense potential for diverse applications. Through a dialogue between two university students, Dahua and Xiaoxue, this article explores the chemical principles underlying intrinsic and extrinsic self-healing mechanisms, including reversible reactions, dynamic covalent bonds, and supramolecular interactions. Additionally, it highlights the future development prospects of self-healing materials.
2026, 41(2): 273-278
doi: 10.12461/PKU.DXHX202502020
Abstract:
Thalidomide, once infamous for its teratogenic effects, is now widely utilized in treating inflammation, malignant tumors, and various autoimmune diseases. Traditional chemistry textbooks often emphasize its structure and teratogenicity, resulting in limited awareness of its subsequent developments and failing to inspire students to delve deeper into the chemical aspects of this drug. Drawing inspiration from the traditional Chinese story “Zhou Chu Eliminates Three Evils”, this article adopts a first-person narrative to comprehensively explore the history, mechanisms of action, synthesis methods, and modern medical applications of thalidomide. By doing so, it aims to ignite readers’ curiosity and foster a deeper understanding of this multifaceted drug.
Thalidomide, once infamous for its teratogenic effects, is now widely utilized in treating inflammation, malignant tumors, and various autoimmune diseases. Traditional chemistry textbooks often emphasize its structure and teratogenicity, resulting in limited awareness of its subsequent developments and failing to inspire students to delve deeper into the chemical aspects of this drug. Drawing inspiration from the traditional Chinese story “Zhou Chu Eliminates Three Evils”, this article adopts a first-person narrative to comprehensively explore the history, mechanisms of action, synthesis methods, and modern medical applications of thalidomide. By doing so, it aims to ignite readers’ curiosity and foster a deeper understanding of this multifaceted drug.
2026, 41(2): 279-285
doi: 10.12461/PKU.DXHX202502082
Abstract:
This popular science article employs a creative narrative approach, with a glucose molecule serving as the first-person narrator to vividly describe cellular respiration in eukaryotic cells. The story traces the metabolic transformations of various compounds, energy transfer pathways, and underlying chemical reactions throughout this fundamental biological process. Through this engaging perspective, the complete respiration pathway comes to life - from initial glycolysis to the citric acid cycle and final oxidative phosphorylation.
This popular science article employs a creative narrative approach, with a glucose molecule serving as the first-person narrator to vividly describe cellular respiration in eukaryotic cells. The story traces the metabolic transformations of various compounds, energy transfer pathways, and underlying chemical reactions throughout this fundamental biological process. Through this engaging perspective, the complete respiration pathway comes to life - from initial glycolysis to the citric acid cycle and final oxidative phosphorylation.
2026, 41(2): 286-294
doi: 10.12461/PKU.DXHX202503082
Abstract:
Cuisine is far more than just a feast for the taste buds — it represents a fascinating stage where physical chemistry principles come to life. When we savor the color, aroma and flavor of food, we are actually experiencing intricate and sophisticated chemical transformations. To thoroughly explore the physical chemistry behind these gastronomic experiences, this article investigates several key aspects: how taste perception emerges from neural-molecular interactions, the subtle changes occurring during food storage, and the remarkable transformations of ingredients during cooking processes. Through these analyses, we reveal the fundamental principles governing various physical changes in food processing and preservation. Our ultimate goal is to help readers develop stronger capabilities in comprehensively analyzing, predicting and simulating complex food engineering challenges.
Cuisine is far more than just a feast for the taste buds — it represents a fascinating stage where physical chemistry principles come to life. When we savor the color, aroma and flavor of food, we are actually experiencing intricate and sophisticated chemical transformations. To thoroughly explore the physical chemistry behind these gastronomic experiences, this article investigates several key aspects: how taste perception emerges from neural-molecular interactions, the subtle changes occurring during food storage, and the remarkable transformations of ingredients during cooking processes. Through these analyses, we reveal the fundamental principles governing various physical changes in food processing and preservation. Our ultimate goal is to help readers develop stronger capabilities in comprehensively analyzing, predicting and simulating complex food engineering challenges.
2026, 41(2): 295-300
doi: 10.12461/PKU.DXHX202502088
Abstract:
Dental plaque, a complex biofilm formed by various oral pathogens embedded in an extracellular polymeric substance (EPS) matrix, is characterized by its inconspicuous nature, strong adherence, and resistance to removal, making it a key factor in the development of periodontal diseases. This article employs a narrative approach to present strategies for the detection, treatment, and prevention of dental plaque, aiming to enhance public awareness of oral hygiene and correct misconceptions about dental care. Furthermore, it seeks to foster a deeper understanding of bacterial biofilms, exemplified by dental plaque, highlighting their positive roles in various aspects of life and showcasing the transformative power of science in turning challenges into opportunities.
Dental plaque, a complex biofilm formed by various oral pathogens embedded in an extracellular polymeric substance (EPS) matrix, is characterized by its inconspicuous nature, strong adherence, and resistance to removal, making it a key factor in the development of periodontal diseases. This article employs a narrative approach to present strategies for the detection, treatment, and prevention of dental plaque, aiming to enhance public awareness of oral hygiene and correct misconceptions about dental care. Furthermore, it seeks to foster a deeper understanding of bacterial biofilms, exemplified by dental plaque, highlighting their positive roles in various aspects of life and showcasing the transformative power of science in turning challenges into opportunities.
2026, 41(2): 301-306
doi: 10.12461/PKU.DXHX202502108
Abstract:
The oil-paper umbrella, a traditional Chinese handicraft with a history spanning thousands of years, stands as a significant symbol of Chinese culture. This article narrates the story of an old craftsman creating oil-paper umbrellas as a dowry for his daughter’s wedding, delving into the chemical principles underlying its production process. Key techniques such as alkaline pulping, persimmon lacquer bonding, cinnabar adhesion, and tung oil waterproofing are explored in detail. Additionally, the article uncovers the ideological and political elements embedded in this craft, seamlessly integrating culture, chemistry, and ideological education to achieve a harmonious balance between knowledge dissemination and value guidance.
The oil-paper umbrella, a traditional Chinese handicraft with a history spanning thousands of years, stands as a significant symbol of Chinese culture. This article narrates the story of an old craftsman creating oil-paper umbrellas as a dowry for his daughter’s wedding, delving into the chemical principles underlying its production process. Key techniques such as alkaline pulping, persimmon lacquer bonding, cinnabar adhesion, and tung oil waterproofing are explored in detail. Additionally, the article uncovers the ideological and political elements embedded in this craft, seamlessly integrating culture, chemistry, and ideological education to achieve a harmonious balance between knowledge dissemination and value guidance.
2026, 41(2): 307-313
doi: 10.12461/PKU.DXHX202502122
Abstract:
In the context of global efforts toward carbon neutrality and peak carbon emissions, developing alternative energy solutions and improving energy efficiency have become critical priorities. Phase change materials (PCMs) show significant promise in addressing these challenges. This article explores the fundamental chemistry behind reusable hand warmers through the “hot ice” experiment, demonstrating how crystallization of supersaturated sodium acetate solution releases latent heat. Beyond its visual appeal, this experiment serves as an engaging introduction to thermal energy storage concepts. We draw parallels between electrical energy storage in batteries and thermal energy storage using PCMs, presenting several practical applications that highlight the potential of this technology for sustainable energy solutions.
In the context of global efforts toward carbon neutrality and peak carbon emissions, developing alternative energy solutions and improving energy efficiency have become critical priorities. Phase change materials (PCMs) show significant promise in addressing these challenges. This article explores the fundamental chemistry behind reusable hand warmers through the “hot ice” experiment, demonstrating how crystallization of supersaturated sodium acetate solution releases latent heat. Beyond its visual appeal, this experiment serves as an engaging introduction to thermal energy storage concepts. We draw parallels between electrical energy storage in batteries and thermal energy storage using PCMs, presenting several practical applications that highlight the potential of this technology for sustainable energy solutions.
2026, 41(2): 314-322
doi: 10.12461/PKU.DXHX202503017
Abstract:
Does a bowl of creamy, aromatic lamb soup require technology and brute force? Behind the “white soup incident” that sparked nationwide debate in late 2024 lies an intriguing food science mystery. This article aims to reveal the science behind “white soup” through simple home experiments. Results indicate: alkaline water and collagen both facilitate the emulsification of oil and water; the soy milk maker acts as a “physical wizard”, pulverizing fats into nano-sized particles to rapidly achieve the pinnacle of emulsification. Traditional lamb soup preparation requires no industrial additives. Through “natural magic” (phospholipids and collagen) and “physical magic” (boiling), enhanced by the “magic of time”, it achieves a stable, milky soup with a unique “aroma code”. Yet for modern consumers with high-fat diets, while white soup is delightful, moderation is advised.
Does a bowl of creamy, aromatic lamb soup require technology and brute force? Behind the “white soup incident” that sparked nationwide debate in late 2024 lies an intriguing food science mystery. This article aims to reveal the science behind “white soup” through simple home experiments. Results indicate: alkaline water and collagen both facilitate the emulsification of oil and water; the soy milk maker acts as a “physical wizard”, pulverizing fats into nano-sized particles to rapidly achieve the pinnacle of emulsification. Traditional lamb soup preparation requires no industrial additives. Through “natural magic” (phospholipids and collagen) and “physical magic” (boiling), enhanced by the “magic of time”, it achieves a stable, milky soup with a unique “aroma code”. Yet for modern consumers with high-fat diets, while white soup is delightful, moderation is advised.
2026, 41(2): 323-327
doi: 10.12461/PKU.DXHX202503071
Abstract:
Zirconium, a versatile element of the atomic age, possesses exceptional properties including high-temperature resistance and a low thermal neutron absorption cross-section. This creative science narrative presents The Zirconium Kingdom, a fictional world where elemental characters collaborate to prevent an asteroid crisis. Through this engaging storyline, we explore zirconium’s discovery, its unique material characteristics, and its diverse applications—from nuclear reactors to aerospace thermal protection systems. By blending scientific facts with imaginative storytelling, this work aims to make zirconium’s chemistry more accessible and memorable for readers.
Zirconium, a versatile element of the atomic age, possesses exceptional properties including high-temperature resistance and a low thermal neutron absorption cross-section. This creative science narrative presents The Zirconium Kingdom, a fictional world where elemental characters collaborate to prevent an asteroid crisis. Through this engaging storyline, we explore zirconium’s discovery, its unique material characteristics, and its diverse applications—from nuclear reactors to aerospace thermal protection systems. By blending scientific facts with imaginative storytelling, this work aims to make zirconium’s chemistry more accessible and memorable for readers.
2026, 41(2): 328-334
doi: 10.12461/PKU.DXHX202503111
Abstract:
This article examines the chemistry involved in the alchemy furnace depicted in the popular film Nezha: Birth of the Demon Child, focusing on processes like mercury sulfide decomposition and black powder reactions. By analyzing these chemical transformations, we uncover the scientific knowledge embedded in ancient alchemical practices and explore their connection to modern chemistry. The study highlights how humanity's quest to understand matter has evolved continuously from mystical traditions to scientific inquiry, demonstrating that the essence of scientific spirit lies in persistent exploration and innovation. Concluding with the metaphor of “scientific cultivation,” we advocate for carrying forward this timeless spirit of discovery and integrating traditional wisdom into future scientific advancement.
This article examines the chemistry involved in the alchemy furnace depicted in the popular film Nezha: Birth of the Demon Child, focusing on processes like mercury sulfide decomposition and black powder reactions. By analyzing these chemical transformations, we uncover the scientific knowledge embedded in ancient alchemical practices and explore their connection to modern chemistry. The study highlights how humanity's quest to understand matter has evolved continuously from mystical traditions to scientific inquiry, demonstrating that the essence of scientific spirit lies in persistent exploration and innovation. Concluding with the metaphor of “scientific cultivation,” we advocate for carrying forward this timeless spirit of discovery and integrating traditional wisdom into future scientific advancement.
2026, 41(2): 335-343
doi: 10.12461/PKU.DXHX202502127
Abstract:
The Chemistry Experiment Teaching Center at the University of Science and Technology of China (USTC), as an Anhui Provincial science education base, has developed extensive experience in science outreach. This article presents the Center’s practices in developing science communication resources, conducting both online and offline outreach activities, and organizing science communication volunteer programs. We propose that universities should fully utilize their academic strengths to create high-quality science communication materials, expand their reach through digital tools, and integrate science popularization with education to better support innovation and new quality productivity development.
The Chemistry Experiment Teaching Center at the University of Science and Technology of China (USTC), as an Anhui Provincial science education base, has developed extensive experience in science outreach. This article presents the Center’s practices in developing science communication resources, conducting both online and offline outreach activities, and organizing science communication volunteer programs. We propose that universities should fully utilize their academic strengths to create high-quality science communication materials, expand their reach through digital tools, and integrate science popularization with education to better support innovation and new quality productivity development.
2026, 41(2): 344-352
doi: 10.12461/PKU.DXHX202503038
Abstract:
This article tells the development history of atomic absorption spectroscopy through Xiaohua’s journey to the instrument museum in his dream. From the discovery of the atomic absorption spectroscopy phenomenon to the commercialization process of atomic absorption spectrometers, it also emphasizes the important applications of atomic absorption spectroscopy in multiple fields. It ends with Xiaohua waking up from the dream and being determined to study the relevant knowledge in depth, inspiring readers to continue exploring.
This article tells the development history of atomic absorption spectroscopy through Xiaohua’s journey to the instrument museum in his dream. From the discovery of the atomic absorption spectroscopy phenomenon to the commercialization process of atomic absorption spectrometers, it also emphasizes the important applications of atomic absorption spectroscopy in multiple fields. It ends with Xiaohua waking up from the dream and being determined to study the relevant knowledge in depth, inspiring readers to continue exploring.
2026, 41(2): 353-359
doi: 10.12461/PKU.DXHX202505017
Abstract:
Mirror-image proteins, composed of D-amino acids and glycine, exhibit distinct structures and functions compared to natural proteins. Starting from the homochirality hypothesis of life’s origin, this article introduces synthetic methods and applications of mirror-image amino acids and proteins. While highlighting their positive societal impacts, we also address potential risks of mirror-image life, aiming to provide a balanced view on this technology’s development.
Mirror-image proteins, composed of D-amino acids and glycine, exhibit distinct structures and functions compared to natural proteins. Starting from the homochirality hypothesis of life’s origin, this article introduces synthetic methods and applications of mirror-image amino acids and proteins. While highlighting their positive societal impacts, we also address potential risks of mirror-image life, aiming to provide a balanced view on this technology’s development.
2026, 41(2): 360-365
doi: 10.12461/PKU.DXHX202502089
Abstract:
To explore effective teaching methods for integrating advanced instrumental analysis techniques with practical applications, this paper discusses the teaching practice of the experiment titled “Distinguishing Green Plastic Bags by Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR)” in the university's instrumental analysis course. Through well-designed experimental cases, teaching content, and lesson plans, the goal is to guide students in deeply understanding and mastering the principles, characteristics, applications, and operational methods of ATR-FTIR. This approach aims to cultivate their learning abilities, practical skills, and innovative capabilities. By incorporating elements of environmental protection related ideological education within the context of distinguishing green plastic bags, the course not only helps students master advanced instrumental analysis techniques but also enhances their awareness of environmental protection and social responsibility. This experimental teaching provides valuable insights and practical experience for the cultivation of high-quality talents with strong practical abilities and a sense of responsibility.
To explore effective teaching methods for integrating advanced instrumental analysis techniques with practical applications, this paper discusses the teaching practice of the experiment titled “Distinguishing Green Plastic Bags by Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR)” in the university's instrumental analysis course. Through well-designed experimental cases, teaching content, and lesson plans, the goal is to guide students in deeply understanding and mastering the principles, characteristics, applications, and operational methods of ATR-FTIR. This approach aims to cultivate their learning abilities, practical skills, and innovative capabilities. By incorporating elements of environmental protection related ideological education within the context of distinguishing green plastic bags, the course not only helps students master advanced instrumental analysis techniques but also enhances their awareness of environmental protection and social responsibility. This experimental teaching provides valuable insights and practical experience for the cultivation of high-quality talents with strong practical abilities and a sense of responsibility.
2026, 41(2): 366-374
doi: 10.12461/PKU.DXHX202503043
Abstract:
With the continuous expansion of the tea-drinking population in China and the improvement of people's quality of life, premium and high-quality teas have become increasingly popular, leading to a rapid increase in demand. This innovative experiment capitalizes on the varying contents of tea polyphenols and amino acids in teas of different grades. It developed a simple and cost-effective colorimetric sensor array based on the indicator replacement principle for the rapid identification of two grades of Wuyishan rock tea (Niulankeng cinnamon and ordinary cinnamon). The RGB values of images captured through smartphone photography are extracted using MATLAB software, followed by analysis of the RGB data through partial least squares discriminant analysis (PLS-DA). The results demonstrate that this method can quickly and accurately distinguish between different grades of tea, with a classification accuracy of 100%. This innovative experiment addresses practical challenges and is closely aligned with cutting-edge scientific research, effectively enhancing students’ comprehensive experimental skills. The integration of advanced chemometrics and mobile imaging technology not only increases students’ interest in and understanding of subjects like image processing and data analysis, but also boosts their participation in scientific experiments and deepens their critical thinking. Furthermore, due to its reliance on inexpensive equipment and the clear visual effects it provides, the experiment can be applied in the development of comprehensive experimental curricula in universities. This approach could help solve issues such as the shortage of large-scale precision instruments and the monotony of experiments in certain institutions.
With the continuous expansion of the tea-drinking population in China and the improvement of people's quality of life, premium and high-quality teas have become increasingly popular, leading to a rapid increase in demand. This innovative experiment capitalizes on the varying contents of tea polyphenols and amino acids in teas of different grades. It developed a simple and cost-effective colorimetric sensor array based on the indicator replacement principle for the rapid identification of two grades of Wuyishan rock tea (Niulankeng cinnamon and ordinary cinnamon). The RGB values of images captured through smartphone photography are extracted using MATLAB software, followed by analysis of the RGB data through partial least squares discriminant analysis (PLS-DA). The results demonstrate that this method can quickly and accurately distinguish between different grades of tea, with a classification accuracy of 100%. This innovative experiment addresses practical challenges and is closely aligned with cutting-edge scientific research, effectively enhancing students’ comprehensive experimental skills. The integration of advanced chemometrics and mobile imaging technology not only increases students’ interest in and understanding of subjects like image processing and data analysis, but also boosts their participation in scientific experiments and deepens their critical thinking. Furthermore, due to its reliance on inexpensive equipment and the clear visual effects it provides, the experiment can be applied in the development of comprehensive experimental curricula in universities. This approach could help solve issues such as the shortage of large-scale precision instruments and the monotony of experiments in certain institutions.
2026, 41(2): 375-384
doi: 10.12461/PKU.DXHX202503036
Abstract:
This study presents the preparation of Sb3+-doped organic-inorganic hybrid halide microcrystals, (TMA)2ZrCl6(TMA = C4H12N), with tunable excitation-dependent luminescence. By controlling the excitation wavelength, (TMA)2ZrCl6:Sb3+ exhibits dynamic multiexciton emission, enabling reversible color switching. The material demonstrates remarkable photoluminescence properties, including a high quantum yield (up to 94.31%), broad emission tunability, and excellent environmental stability—making it highly suitable for anti-counterfeiting and solid-state lighting applications. The experiment is designed to be simple, time-efficient, and visually engaging, with vivid color variations under different excitation wavelengths, effectively illustrating fundamental luminescence mechanisms while capturing audience interest.
This study presents the preparation of Sb3+-doped organic-inorganic hybrid halide microcrystals, (TMA)2ZrCl6(TMA = C4H12N), with tunable excitation-dependent luminescence. By controlling the excitation wavelength, (TMA)2ZrCl6:Sb3+ exhibits dynamic multiexciton emission, enabling reversible color switching. The material demonstrates remarkable photoluminescence properties, including a high quantum yield (up to 94.31%), broad emission tunability, and excellent environmental stability—making it highly suitable for anti-counterfeiting and solid-state lighting applications. The experiment is designed to be simple, time-efficient, and visually engaging, with vivid color variations under different excitation wavelengths, effectively illustrating fundamental luminescence mechanisms while capturing audience interest.
2026, 41(2): 385-392
doi: 10.12461/PKU.DXHX202502049
Abstract:
The extraction of caffeine from tea leaves, a classic experiment in university chemistry curricula, encompasses fundamental chemical operations and theoretical principles of natural product isolation and purification. This experiment also holds significant importance in secondary school education and examinations. In this study, we have developed an innovative heating apparatus utilizing flexible silicone rubber heating plates, a material commonly employed in the chemical industry. This novel device replaces traditional heating equipment, substantially enhancing experimental safety. Furthermore, we have designed a cost-effective and visually engaging caffeine sublimation apparatus using readily available materials, which demonstrates high experimental success rates. This apparatus is particularly suitable for educational demonstrations and experiments in regions with limited educational resources. Our experimental design, centered on engaging and interactive approaches, facilitates students' comprehension of fundamental chemical principles and experimental techniques. It also deepens their understanding of chemistry’s significance in modern society and fosters increased interest in the chemical sciences.
The extraction of caffeine from tea leaves, a classic experiment in university chemistry curricula, encompasses fundamental chemical operations and theoretical principles of natural product isolation and purification. This experiment also holds significant importance in secondary school education and examinations. In this study, we have developed an innovative heating apparatus utilizing flexible silicone rubber heating plates, a material commonly employed in the chemical industry. This novel device replaces traditional heating equipment, substantially enhancing experimental safety. Furthermore, we have designed a cost-effective and visually engaging caffeine sublimation apparatus using readily available materials, which demonstrates high experimental success rates. This apparatus is particularly suitable for educational demonstrations and experiments in regions with limited educational resources. Our experimental design, centered on engaging and interactive approaches, facilitates students' comprehension of fundamental chemical principles and experimental techniques. It also deepens their understanding of chemistry’s significance in modern society and fosters increased interest in the chemical sciences.
2026, 41(2): 393-399
doi: 10.12461/PKU.DXHX202502104
Abstract:
This study investigates the implementation of 3D printing technology in the “Polymer Physics Experiments” course, emphasizing the integration of ideological and political education elements. The project employs a hybrid teaching methodology that combines lecture-based instruction with independent design components. The curriculum design extensively incorporates ideological and political elements through both historical and contemporary perspectives: examining the evolution of material processing technologies and exploring the diverse applications of 3D printing across various fields. The course introduces philosophical considerations to cultivate students' problem-solving engineering mindset, innovative leadership capabilities, and collaborative team spirit. This approach achieves a comprehensive integration of technical education and ideological-political cultivation, establishing a foundation for developing new engineering professionals with robust technical expertise, scientific literacy, and ethical integrity.
This study investigates the implementation of 3D printing technology in the “Polymer Physics Experiments” course, emphasizing the integration of ideological and political education elements. The project employs a hybrid teaching methodology that combines lecture-based instruction with independent design components. The curriculum design extensively incorporates ideological and political elements through both historical and contemporary perspectives: examining the evolution of material processing technologies and exploring the diverse applications of 3D printing across various fields. The course introduces philosophical considerations to cultivate students' problem-solving engineering mindset, innovative leadership capabilities, and collaborative team spirit. This approach achieves a comprehensive integration of technical education and ideological-political cultivation, establishing a foundation for developing new engineering professionals with robust technical expertise, scientific literacy, and ethical integrity.
2026, 41(2): 400-410
doi: 10.12461/PKU.DXHX202501004
Abstract:
Named reactions constitute a crucial component of undergraduate organic chemistry education. A thorough understanding of these reactions significantly enhances chemistry students' comprehension of the mechanisms underlying fundamental organic transformations. However, the dispersed presentation of named reactions in textbooks, coupled with insufficient systematic organization in teaching, often leads to student confusion and the development of avoidance behaviors due to perceived difficulty. To address these challenges, this study systematically organizes common organic chemistry named reactions, categorizing them based on principles including carbon atom addition/removal, functional group transformations, and shared reaction intermediates. Teaching practice demonstrates that students respond positively to and appreciate this structured approach to learning named reactions.
Named reactions constitute a crucial component of undergraduate organic chemistry education. A thorough understanding of these reactions significantly enhances chemistry students' comprehension of the mechanisms underlying fundamental organic transformations. However, the dispersed presentation of named reactions in textbooks, coupled with insufficient systematic organization in teaching, often leads to student confusion and the development of avoidance behaviors due to perceived difficulty. To address these challenges, this study systematically organizes common organic chemistry named reactions, categorizing them based on principles including carbon atom addition/removal, functional group transformations, and shared reaction intermediates. Teaching practice demonstrates that students respond positively to and appreciate this structured approach to learning named reactions.
2026, 41(2): 411-419
doi: 10.12461/PKU.DXHX202503033
Abstract:
In the 2017 national college entrance examination, a test question was designed based on the pentazole anion (cyclo-N5-) salt reported by Chinese scholars. Since then, the number of test questions related to polynitrogen compounds has gradually increased. By reviewing the research and development history of polynitrogen compounds and analyzing test questions derived from these materials, scientific inaccuracies were identified in some cases. Therefore, when developing test items in the context of academic exploration, particular attention should be given to ensuring accuracy, relevance, and the backwash effect.
In the 2017 national college entrance examination, a test question was designed based on the pentazole anion (cyclo-N5-) salt reported by Chinese scholars. Since then, the number of test questions related to polynitrogen compounds has gradually increased. By reviewing the research and development history of polynitrogen compounds and analyzing test questions derived from these materials, scientific inaccuracies were identified in some cases. Therefore, when developing test items in the context of academic exploration, particular attention should be given to ensuring accuracy, relevance, and the backwash effect.
2026, 41(2): 420-428
doi: 10.12461/PKU.DXHX202502081
Abstract:
From the discovery of chlorine gas in 1774 to its recognition as a new element in 1810, chemists were influenced by the prevailing chemical theories of the time, which led to varying interpretations of chlorine. By reviewing relevant literature, this paper traces the early history, from the discovery of chlorine to the formulation of the concept of the chlorine element, and explores the impact of contemporary chemical theories on the development of the chlorine element concept across different historical periods.
From the discovery of chlorine gas in 1774 to its recognition as a new element in 1810, chemists were influenced by the prevailing chemical theories of the time, which led to varying interpretations of chlorine. By reviewing relevant literature, this paper traces the early history, from the discovery of chlorine to the formulation of the concept of the chlorine element, and explores the impact of contemporary chemical theories on the development of the chlorine element concept across different historical periods.
2026, 41(2): 429-434
doi: 10.12461/PKU.DXHX202502001
Abstract:
The “Kitchen Chemistry” course at the Massachusetts Institute of Technology (MIT) is a unique and engaging program where students conduct cooking experiments to create edible and flavorful foods. In this course, cooking is regarded as one of the oldest and most widespread applications of chemistry, and recipes serve as the students’ experimental handouts. While performing experiments, students are not explicitly exposed to chemical education elements; instead, they acquire chemical knowledge related to cooking by reading research papers and consulting online resources after experiencing joy and satisfaction from cooking. As a result, the experimental component of this course remains highly appealing to students, and no advanced chemical laboratory skills are required. In contrast, general chemistry laboratory courses in Chinese universities often devolve into “simplified” versions of traditional chemistry experiments, ultimately leading to a lack of student interest. The MIT “Kitchen Chemistry” course, which integrates culinary culture throughout its design, establishes a distinct and cohesive theme, offering valuable insights for curriculum development in China.
The “Kitchen Chemistry” course at the Massachusetts Institute of Technology (MIT) is a unique and engaging program where students conduct cooking experiments to create edible and flavorful foods. In this course, cooking is regarded as one of the oldest and most widespread applications of chemistry, and recipes serve as the students’ experimental handouts. While performing experiments, students are not explicitly exposed to chemical education elements; instead, they acquire chemical knowledge related to cooking by reading research papers and consulting online resources after experiencing joy and satisfaction from cooking. As a result, the experimental component of this course remains highly appealing to students, and no advanced chemical laboratory skills are required. In contrast, general chemistry laboratory courses in Chinese universities often devolve into “simplified” versions of traditional chemistry experiments, ultimately leading to a lack of student interest. The MIT “Kitchen Chemistry” course, which integrates culinary culture throughout its design, establishes a distinct and cohesive theme, offering valuable insights for curriculum development in China.
2026, 41(2): 435-438
doi: 10.12461/PKU.DXHX202502043
Abstract:
The 6th question of the 38th Chemistry Olympiad (Preliminary) focuses on the preparation, structure, and properties of chromous acetate. Chromous acetate is a representative compound containing metal-metal quadruple bonds. This article offers a detailed analysis of the metal-metal multiple bonds in the exam questions and discusses their significance in chemistry competition learning.
The 6th question of the 38th Chemistry Olympiad (Preliminary) focuses on the preparation, structure, and properties of chromous acetate. Chromous acetate is a representative compound containing metal-metal quadruple bonds. This article offers a detailed analysis of the metal-metal multiple bonds in the exam questions and discusses their significance in chemistry competition learning.
