本实验是针对本科生能力水平、结合光伏领域前沿设计的一个化学综合实验。本实验采用简单的旋涂法在导电玻璃表面制备CsPbBr₃钙钛矿薄膜材料，并创新性地将光探测器件的组装实验加入其中以研究CsPbBr₃薄膜的光电性能。学生可在实验过程中肉眼可见地观察到黄色的CsPbBr₃材料在紫外激光照射下发射出强烈的绿光，这一实验现象能够有效地激发学生兴趣。

The CdS/Ti₃AlC₂ heterojunction photocatalyst was synthesized by the hydrothermal method, and its structure and performance were systematically analyzed through various characterization methods, including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), and photoluminescence (PL) spectroscopy, etc. The results confirmed the successful construction of the composite material and its excellent charge separation ability. Under ultraviolet light irradiation, the photocatalytic degradation performance of tetracycline was studied, and its degradation mechanism was clarified, among which the superoxide radical (·O₂^-) was the main active species. Under the conditions of pH=7 and catalyst dosage of 0.1 g·L^-1, CdS/Ti₃AlC₂ exhibited excellent photocatalytic performance, with a TC degradation efficiency as high as 96.3%.