李正名院士是我国著名的教育家、化学家和农药学家。在李先生逝世3周年之际，李正名奖学金捐赠暨首届颁奖仪式在南开大学举行。本文结合一部分典型的具体事例，对李正名先生的教育家精神和科学家精神进行了介绍，从中折射出他始终如一的坚定爱国信念和无私奉献精神。青年学子通过学习李先生的光辉事迹，可以深入了解老一辈科学家浓厚的家国情怀。本文有助于激励当代大学生厚植爱国主义理想与信念，增强自主创新意识和能力，立志为中华民族的伟大复兴贡献自己的全部力量。

含氟钙钛矿及其衍生物因其优异的物理和化学性质在新能源、光电器件、催化及磁性材料等领域获得了广泛关注。这类材料的合成方法是该研究领域的核心之一。合成路径的选择和优化直接影响材料的结构、性能、形貌以及在实际应用中的表现。目前, 含氟钙钛矿及其衍生物的合成方法主要包括传统的固相合成法、沉淀法、水热/溶剂热法、以及新兴的软化学合成法、沉积法等, 然而这些合成方法还没有系统的概述。因此, 本文综述了该系列化合物的合成方法, 总结了目前面临的挑战并对未来发展方向进行了展望, 期望以此推动该领域更深入、广泛的研究。

Aiming at the problem of water pollution, a broad-spectrum response composite material CQDs/PW₁₂/CdS modified by carbon quantum dots (CQDs) was prepared via a microwave-assisted hydrothermal method using glucose as the carbon source, cadmium sulfide (CdS) and phosphotungstic acid (PW₁₂) as precursors. The photocatalytic mechanism of CQDs/PW₁₂/CdS is more inclined towards the Z-scheme heterojunction. The optimized CQDs/PW₁₂/CdS heterojunction composites achieved 93.01% photodegradation efficiency of rhodamine B (RhB) at 120 min of simulated sunlight irradiation, and they also exhibited a favorable degrading effect on common dyes and antibiotics in water. Using lactic acid as the sacrificial reagent, the photocatalytic hydrogen production activity of the developed photocatalyst was evaluated under simulated sunlight irradiation. According to the experimental results, after 8 h of irradiation, the CQDs/PW₁₂/CdS composite material showed the highest H₂ production rate (12.34 mmol·g^-1), which was six times that of the monomer CdS (2.05 mmol·g^-1). The enhancement of photocatalytic activity is attributed to the effective separation of photogenerated charges caused by the anisotropic junctions in the CQDs/PW₁₂/CdS system.