作为我国高等化学教育发展的见证者与推动者，《大学化学》自创刊之日起，便肩负起引领教学改革、服务一线教师的重任。四十年风雨兼程，期刊在摸索中成长，离不开几代编委、作者和读者的共同努力。展望未来，我们初心不改，将继续脚踏实地，努力提高质量，让《大学化学》更好地成为化学教师们的良师益友，为建设教育强国贡献一份力量。在此，深切缅怀创刊先驱，并向所有支持者致以最诚挚的谢意！

本文介绍了诺贝尔化学奖得主、德国化学家卡尔∙齐格勒(Karl Ziegler)的科研历程及贡献以纪念他逝世50周年。Ziegler对科学的热情、独特的思维和卓越的实验能力奠定了他的科学基础。他专注于自由基化合物、多元环化合物和有机金属化合物的研究，他与朱利奥∙纳塔共同发明命名的Ziegler-Natta催化剂对全球聚烯烃工业产生深远影响，造就了上千亿美元的市场。

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.

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.