The development of catalysts for efficient photocatalytic antibiotic residue degradation has received considerable attention. Herein, we report the effective preparation of an innovative g-C₃N₄-TiO₂@CsPbBr₃ composite by anchoring TiO₂@CsPbBr₃ on the surface of g-C₃N₄. An investigation was undertaken to determine the microstructure, electrochemical and optical characteristics of the photocatalyst as well as its ability to degrade tetracycline hydrochloride in water. The experimental results demonstrated increased light-harvesting capability and more efficient charge carrier separation was achieved for the as-prepared g-C₃N₄-TiO₂@CsPbBr₃ catalyst. Consequently, the sample displayed outstanding photocatalytic performance for the degradation of tetracycline hydrochloride. Its degradation rate reached 75.6 % in 120 min, which is 2.30 and 2.03 times that of TiO₂@CPB and pure g-C₃N₄. Moreover, it was discovered that •O₂⁻ is the dominant active specie in the photocatalytic degradation process. Based on the results, a possible photocatalytic mechanism for the degradation of tetracycline hydrochloride was described in detail. This research inspires the construction of CsPbBr₃-based photocatalysts and broadens their applications in tetracycline degradation.

高效光催化抗生素残留降解催化剂的开发受到了相当大的关注。_{在此，我们报告了通过将 TiO 2} @CsPbBr _{3锚定在 gC 3} N ₄表面上，有效制备了创新的 gC ₃ N ₄ -TiO ₂ @CsPbBr ₃复合材料。进行了一项研究以确定光催化剂的微观结构、电化学和光学特性及其降解水中四环素盐酸盐的能力。实验结果表明，所制备的 gC 具有更高的光捕获能力和更有效的载流子分离₃ N ₄ -TiO ₂ @CsPbBr ₃催化剂。因此，该样品对四环素盐酸盐的降解表现出优异的光催化性能。其降解率在120 min内达到75.6%，分别是TiO ₂ @CPB和纯gC ₃ N ₄的2.30和2.03倍。此外，还发现•O ₂ ^-是光催化降解过程中的主要活性物质。基于这些结果，详细描述了降解四环素盐酸盐的可能的光催化机理。该研究启发了CsPbBr _3的构建基于光催化剂并拓宽了它们在四环素降解中的应用。