In this study, ZnSnO₃/NiO heterostructures were synthesized using a co-precipitation method followed by an annealing process. The gas-sensitive characteristics of the sensors based on these samples were evaluated. The results indicate that the sensor performance was optimized when the molar ratio of Ni to Zn was 1∶2. Specifically, the response values of the ZnSnO₃/NiO-2-based sensor to 100 μL·L^-1 triethylamine (TEA) gas at 220 ℃ reached 70.6, which were 6.1 times higher than that of the pure ZnSnO₃ based sensor. The findings demonstrate that ZnSnO₃/NiO heterostructures exhibited not only short response and recovery times (1 s/18 s) but also good gas selectivity, repeatability, and long-term stability. The enhanced sensing mechanism has been investigated in detail.

由于电催化剂中的非晶区和结晶区具有不同的物理化学性质，因此非晶化/结晶化工程成为提高电解水催化动力学的重要策略。然而，在微观环境中有效地调控催化剂的结晶度仍然是一个严峻的挑战。本文介绍了一种可调节结晶度的新型CrS/CoS₂异质结构，该异质结对氢气析出反应(HER)和氧气析出反应(OER)都具有高效的催化活性。Cr―S―Co键的重新分配引起的d带中心移动有助于调节中间体H*和OOH*在催化剂表面的吸附能力，从而优化HER和OER的决速步骤。在最佳条件下，非晶态CrS和高度结晶的CoS₂异质结(A-CrS/HC-CoS₂)在HER和OER均表现出优异的催化活性，分别为90.6 mV (10 mA∙cm⁻²，HER)和370.5 mV (50 mA∙cm⁻²，OER)。非晶/高晶结构有利于A-CrS/HC-CoS₂在水电解过程中的结构和成分演变，因此具有出色的稳定性。作为甲醇辅助节能制氢装置中的双功能催化剂，A-CrS/HC-CoS₂仅需1.51 Ⅴ的低槽电压即可达到10 mA∙cm⁻²的电流密度，证明其是理想的金属基催化剂的候选材料。本研究为双功能过渡金属化合物电催化剂在非晶态/晶态异质结构中通过结晶度调控来提高催化活性和稳定性提供了重要启示。

聚N-异丙基丙烯酰胺(PNIPAm)交联温敏纳米纤维膜作为一种相变温度易于控制的新兴响应性材料，克服了传统PNIPAm块状水凝胶的生产成本高、响应速率慢和PNIPAm非交联温敏纳米纤维耐水性差的缺点，受到广泛研究并应用于智能开关、温度致动器、水油分离、药物、细胞控制释放和伤口敷料等领域。形貌稳定性和快速响应性是温敏纳米纤维膜在重复体积变化过程中最大的挑战，同时也作为评价PNIPAm温敏纳米纤维膜的实用性最重要指标引起了人们广泛的关注。本文全面综述了PNIPAm温敏纳米纤维膜近二十年来国内外的突破性进展和非交联作用下PNIPAm温敏纳米纤维膜的形貌变化和响应性，重点综合分析了物理和化学交联中交联反应类型、交联度、交联时间和交联分子量对PNIPAm温敏纳米纤维膜的形貌稳定性和响应行为的影响，为之后纤维膜的交联处理提供了理论支持，并对PNIPAm温敏纳米纤维膜的发展及应用前景进行了展望。

Herein, an FMS/CC composite was successfully fabricated by depositing FeMoS₄ onto a pristine carbon fiber cloth (CC) substrate via a facile two-step hydrothermal method. The amorphous nature of the FMS/CC composite endows it with abundant catalytically active sites, thereby accelerating the reduction of I₃^-. More importantly, the dye-sensitized solar cells (DSSCs) prepared by scraping it on flexible titanium mesh with low resistance had low series resistance (R_s). Electrochemical characterizations revealed that the DSSCs employing the FMS/CC counter electrode achieved a power conversion efficiency (PCE) of ca. 9.51% (surpassing the ca. 8.15% efficiency of the Pt counter electrode), open-circuit voltage (V_oc) of ca. 0.79 V, short-circuit current density (J_sc) of ca. 18.31 mA·cm^-2, and fill factor (FF) of ca. 0.65. Moreover, after 100 times of cyclic voltammetry (CV) test, the CV curve remainedunchanged, indicating the excellent stability of FMS/CC in the electrolyte containing I^3-/I^-.

面向化学类(非高分子)专业的高分子化学实验教学发展较为缓慢，亟需紧跟研究前沿，引入新内容。本文总结了近十年的教学改革经验，并以温敏型高分子的制备、溶液性质、光学性能与应用为例，介绍如何通过实验教学内容、实验技术、教学方法等方面的创新，设计符合理科人才培养需求的、契合时代与科学发展的、被学生喜爱与重视的一系列高分子化学实验，以有效解决培养需求与课业负担之间的矛盾，且在不新增开课、课时有限的情况下，加入到化学类专业本科教学体系中，激发学生对学科领域的兴趣，提升学生的探究和创新能力。

甲烷是一种储量丰富的能源资源，在“碳达峰、碳中和”目标背景下，甲烷的催化转化是我国实现能源转型和碳减排的关键。本文对甲烷催化转化的研究背景、转化途径和反应机理、面临的挑战进行了综述分析；文中重点详细阐述了甲烷转化所涉及的四种方法：热化学转化法、光化学转化法、电化学转化法以及生物转化法，并对四种方法制得化学品的具体情况进行了详细的分析，对未来甲烷催化转化的发展方向进行了展望，旨在为我国实现甲烷的高效利用和碳减排提供理论和技术参考。

在研究生基础课“化学反应动力学”教学中，秉持“以学生的学习和发展为中心”的教育理念，将课程内容与课程思政和学科前沿紧密融合，并交替采用问题驱动学习(PBL)和基于研究学习(RBL)的教学模式，带动研究生发挥学习主体的能动性，促进夯实基础知识，形成科学的理性思维及创新能力，提升综合分析-解决问题能力，为研究生后续取得科研创新成果打下坚实基础。

A dual-targeting melanin nanoparticle (MNP-TPP-HA) was constructed by grafting the carboxyl groups of hyaluronic acid (HA) and (4-carboxybutyl) triphenylphosphonium bromide (TPP) onto the surface of polyethylene glycol-amino (PEG-NH₂) modified MNP based on 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and N-hydroxy succinimide (NHS) reaction, endowing melanin with the ability of dual active targeting. The fluorescence imaging of in vitro three-dimensional (3D) tumor models and in vivo photoacoustic imaging (PAI) all reveal the excellent target penetration ability of MNP-TPP-HA.

A mononuclear Co^Ⅱ complex, [Co(H₂dapsc)(H₂O)Cl]Cl·2H₂O (1), with a pentagonal bipyramidal configuration was obtained by reflux reaction of CoCl₂·6H₂O and 2, 6-diacetylpyridine-bis(semicarbazone) (H₂dapsc) in a mixed solvent of water and ethanol. The neutral ligand H₂dapsc molecule provides five coordination atoms to form the equatorial plane of 1, while a water molecule and a Cl^- ion occupy their axial positions. At the same time, the solid structure contains a valence counteranion Cl^- ion and two lattice water molecules. The study of DC magnetic susceptibility indicates that complex 1 has strong magnetic anisotropy. The AC magnetic properties show the existence of slow magnetic relaxation behavior, which is dominated by both direct and Raman processes. The energy barrier for magnetization reversal was 55.55 K. Based on theoretical calculations, it can be concluded that the main reason for the slow magnetic relaxation behavior is the rhombic anisotropy of the pentagonal bipyramidal structure. The calculated D and E values were 45.68 and-0.32 cm^-1.

碳捕集技术是实现“双碳”目标的重要途径。高温工业源CO₂的捕集更宜使用钙基吸收剂。本文立足“双碳”背景，将碳捕集前沿技术融入仪器分析实验课程，开发了蛋壳源CaO的制备、表征及其碳捕集性能的设计性综合实验。选择高钙废弃物鸡蛋壳为原料，采用醋酸处理得到醋酸钙，再经高温煅烧制备了具有较好碳捕集性能的CaO;利用EDTA配位滴定、扫描电子显微镜、X射线衍射、红外光谱、拉曼光谱和热重分析等多种分析手段，测试了CaO的纯度、形貌、结构及其对CO₂的捕集性能。本实验采用项目式教学方式，引导学生自行设计实验方案并进行实践和总结，不仅锻炼了学生综合运用专业知识解决实际问题的能力，而且培养了学生的科研素养和团队合作精神。