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.

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。

在多年的实践过程中，针对本科化学实验教学面临的种种挑战，郑州大学化学实验教学中心多效并举，形成了一系列特色鲜明的教学管理方法，有效服务了高质量化学实验教学工作的开展。本文介绍了郑州大学化学实验教学中心建设中的一些举措和取得的成效，希望能为高校化学实验教学工作和管理服务提供有益的参考借鉴。

Herein, a one-pot chemical reduction method was reported to prepare folic acid (FA)-stabilized silver nanoclusters (FA@Ag NCs), in which FA, hydrazine hydrate, and silver nitrate were used as capping agent, reducing agent, and precursor, respectively. Several technologies were employed to investigate the structures and optical properties of FA@Ag NCs, including transmission electron microscopy (TEM), X ray photoelectron spectrometer (XPS), Fourier transform infrared spectrometer (FTIR), X-ray diffractometer (XRD), fluorescence spectrometer, and ultraviolet visible absorption spectrometer. FA@Ag NCs were suggested to be highly dispersed and spherical with a size of around 2.8 nm. Moreover, the maximum excitation and emission wavelengths of FA@Ag NCs were 370 and 447 nm, respectively. Under the optimal detection conditions, FA@Ag NCs could be used to effectively detect malachite green with the linear detection range of 0.5-200 μmol·L^-1. The detection limit was 0.084 μmol·L^-1. The fluorescence-quenching mechanism was ascribed to the static quenching. The detection system based on FA@Ag NCs was successfully used for the detection of malachite green in actual samples with good accuracy and reproducibility.

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^-.

氨气是一种有毒气体，排放到空气中会对人类和环境造成不可估量的危害，制备廉价、绿色的氨气吸附材料对于氨气处理具有重要意义。本研究采用低成本的8-羟基喹啉-5-磺酸(H₂QS)作为配体，通过简单的低温水热法合成了La³⁺基金属有机框架{[La₄(QS)₆(H₂O)₆]·18H₂O}_n (MOF-LaQS)。实验结果显示，MOF-LaQS在273 K、101 kPa条件下对氨气的最大吸附量可达228 cm³·g^-1(10.2 mmol·g^-1)，且在极低压力(0.101 kPa)下仍能吸附48 cm³·g^-1(2.14 mmol·g^-1)的氨气。通过原位红外光谱和密度泛函理论计算证实了MOF-LaQS中开放的La³⁺金属位点是吸附氨气的关键位点，揭示了其高效吸附氨气的机理。

在有效教学理念的引领下，针对高职无机化学课程的教学困境，从优化与整合课程教学内容、构建与完善课程在线平台、改革与创新课程教学模式、丰富与健全课程评价体系等四个维度，设计了混合式教学改革的方案。实践表明，该教学模式能够拓宽学习渠道，提升学习效率，培养学习习惯，取得了良好的教学成效。

This paper delves into the theoretical mechanisms of the electronic structure and optical properties of aluminum-based semiconductors (AlX, X=N, P, As, Sb) and indium-based semiconductors (InX, X=N, P, As, Sb) as potential materials for optical devices. Band structure calculations reveal that, except for InSb, all other compounds are direct bandgap semiconductors, with AlN exhibiting a bandgap of 3.245 eV. The valence band maximum of these eight compounds primarily stems from the p-orbitals of Al/In and X. In contrast, the conduction band minimum is influenced by all orbitals, with a predominant contribution from the p-orbitals. The static dielectric constant increased with the expansion of the unit cell volume. Compared to AlX and InX with larger X atoms, AlN and InN showed broader absorption spectra in the near-ultraviolet region and higher photoelectric conductance. Regarding mechanical properties, AlN and InN displayed greater shear and bulk modulus than the other compounds. Moreover, among these eight crystal types, a higher modulus was associated with a lower light loss function value, indicating that AlN and InN have superior transmission efficiency and a wider spectral range in optoelectronic material applications.

本文改进了一个用气相色谱法分离分析中药制剂中五种主要成分桉叶油醇、樟脑、薄荷醇、水杨酸甲酯、丁香酚含量的本科仪器分析实验。提出同时用内标法、外标法、归一化法对同一组数据文件进行定量并判断定量结果的准确性，使学生能在有限的教学时间内掌握色谱基础的定性定量方法，了解不同定量分析方法的适用范围，学会计算理论塔板数及分离度等。本实验将基本的色谱理论知识融入生活用品风油精等中药制剂的主成分分析中，使学生真切感受学以致用，且绿色环保，有利于培养学生分析实验数据的能力。

基于BOPPPS有效教学模式，本文对物理化学课程中“稀溶液的依数性”内容进行教学设计并实施教学实践，通过六大模块“起承转合”地巧妙转换及参与式学习的深度应用，充分调动学生的学习积极性。教学过程还结合了雨课堂，实现教学实时互动，同时“润物细无声”地在课程中融入课程思政，为物理化学课程的有效教学设计提供实操性案例。