仪器分析实验“分子荧光法测定罗丹明B的含量”存在实验过于简单、未考虑实际情况等问题。因此，本改进实验在三维荧光扫描模式下获取样本数据，不进行复杂预处理，而是运用化学计量学算法解析出目标分析物的纯信号，进而实现了染色辣椒中罗丹明6G和123的同时测定。本改进实验提高了学生全面考虑问题和创新解决问题的能力。

源起于发霉甜苜蓿，脱胎于生化实验室，华法林先生起初作为一种强力灭鼠毒药大杀四方。然而，在进入医药领域的道路上，他却因毒药的身份标签和种种流言而饱受质疑和反对。科学家们揭示了华法林抗凝血的机制，并证明了华法林抗凝治疗对患者的益处。从此，华法林先生以及他的衍生物们成为了抗凝治疗和防治鼠害的前线战士。

采用原位聚合法制备了氯氧化铋(BiOCl)与聚苯胺(PANI)复合的Ⅱ型异质结光催化剂BiOCl/PANI，并采用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、紫外可见漫反射光谱(UV-Vis DRS)和N2吸附-脱附测试等多种技术手段对其进行了表征，考察了BiOCl/PANI在模拟可见光下对罗丹明B (RhB)的光催化降解性能。实验结果表明：BiOCl/PANI催化剂比PANI和BiOCl具有更高的光催化活性，在RhB质量浓度为50 mg·L^-1、PANI与BiOCl的物质的量之比为0.02∶1、50 mg·L^-1的催化剂条件下，所制备的BiOCl/PANI光催化150 min后，RhB降解率为98.8%，速率常数为0.031 min^-1；经过4次循环实验后，RhB降解率从98.8%降低至98.4%，表现出良好的稳定性和可重复利用性。光催化剂BiOCl/PANI实现了电子和空穴对的快速分离，降低了二者在催化剂内部的复合速率，提高了光催化性能。

皮克林乳液——一种由胶体尺寸固体颗粒稳定水油界面所形成的乳液——是科学研究和生活生产的热点话题。本文对“皮克林乳液”这一概念进行科普，介绍了传统乳液和皮克林乳液的基本概念、形成原理、制备方法、实验室表征结果及在光催化等领域的应用等，让大学生、青少年、幼小学生乃至社会大众通过皮克林乳液体会化学之美和化学之趣。

A simple two-step hydrothermal method synthesized four different CdS/Fe₃O₄ photocatalysts with varying ratios of mass of CdS to Fe₃O₄. The composition and morphology of the prepared samples were investigated using X-ray diffraction (XRD), Raman spectrum, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Solid UV reflectance spectra testing found that CdS/Fe₃O₄ nanocomposites had good light absorption throughout the spectral range, promoting their photocatalytic properties. Under visible light irradiation, CdS/Fe₃O₄ (2:5) with a mass ratio of 2:5 exhibited excellent photocatalytic performance, with a degradation rate of 98.8% for rhodamine B. Furthermore, after five cycles of photocatalytic degradation reaction, the rhodamine B degradation rate remained at 96.2%, indicating that the photocatalysts have good photocatalytic stability.

A flower-like BiOBr photocatalyst (CS/BiOBr) was prepared by using the carbon material derived from corn straw (CS) as the carrier. The prepared composites were characterized by X - ray diffraction (XRD), Fourier transform infrared (FIIR) spectra, scanning electron microscope (SEM), X - ray photoelectron spectra (XPS), and UV-Vis diffuse reflectance spectra (UV-Vis DRS). The SEM analyses indicate that the introduction of CS promotes the formation of a unique flower-like structure in BiOBr, which not only optimizes the efficiency of light capture but also increases the specific surface area of BiOBr. The bandgap of the composite was narrower compared with the pure BiOBr. The CS/BiOBr composites exhibited higher photocatalytic activity than pure CS and BiOBr under visible light irradiation, and a higher first-order reaction rate constant (k) of 0.043 7 min^-1 than BiOBr (0.014 6 min^-1), and exhibited excellent stability and reusability during the cyclic run. The enhanced photocatalytic activity is attributed to the efficient separation of photoinduced electrons and holes. Superoxide radicals and holes were the major active species.

通过简便、高效、可规模化的一步高温氮化法，利用高温烧结使二氧化钛(TiO₂)粉末在转化成氮化钛(TiN)的同时形成连续的三维多孔网络，具有良好的导电性和高孔隙率。作为高效限硫载体，连续的三维多孔TiN网络不仅能有效增加电子传输路径、增强电子转移、促进离子迁移，而且能够从物理限域和化学吸附两方面对多硫化锂的穿梭效应进行强有力的限制，同时有效提高了硫的负载量。制备的高导电性、高硫负载硫正极展现出较高的放电容量和优异的循环稳定性能。

A novel one-dimensional (1D) polycarbonyl coordination polymer [Cu(BGPD)(DMA)(H₂O)]·DMA (named Cu-BD, H₂BGPD=N, N′-bis(glycinyl)pyromellitic diimide; DMA=dimethylacetamide) was synthesized, and evaluated as a cathode material for lithium - ion batteries (LIBs) for the first time. The electrochemical performance study revealed that the Cu-BD cathode exhibited better cycling stability and a specific capacity of 50 mAh·g^-1 after 100 cycles at a current density of 50 mA·g^-1. The study of the reaction mechanism for the Cu-BD electrode discloses that both BGPD^2- ligands and Cu(Ⅱ) ions may take part in the electron-transfer process during charging and discharging.

A 3D nitrogen-doped graphene/multi-walled carbon nanotube (CS-GO-NCNT) crosslinked network material was successfully synthesized utilizing chitosan and melamine as carbon and nitrogen sources, concomitant with the incorporation of multi-wall carbon nanotubes and employing freeze drying technology. The material amalgamates the merits of 1D/2D hybrid carbon materials, wherein 1D carbon nanotubes confer robustness and expedited electron transport pathways, while 2D graphene sheets facilitate rapid ion migration. Furthermore, the introduction of nitrogen heteroatoms serves to furnish additional active sites for lithium storage. When served as an anode material for lithium-ion batteries, the CS-GO-NCNT electrode delivered a reversible capacity surpassing 500 mAh·g^-1, markedly outperforming commercial graphite anodes. Even after 300 cycles at a high current density of 1 A·g^-1, it remained a reversible capacity of up to 268 mAh·g^-1.

多组分二维共轭金属有机骨架(MTV 2Dc-MOFs)是一类由多种有机配体和金属节点通过配位键周期性组装而成的新型多孔晶态材料，由于具有可预测的拓扑结构、可调的孔隙率、高电导率和高电催化活性等优点，受到了广泛关注。同时，利用多金属离子或有机配体之间的协同作用，可以有效调节材料的电化学活性和选择性，为制备新型的功能性更强的2D c-MOFs提供了新的思路和方向。在这篇短综述中，我们小结了近年来报道的具有多金属节点或有机配体构建的MTV 2D c-MOFs的研究进展，并对其设计策略(双组分和三组分)、骨架优势和面临的挑战做出了展望。