A series of AgBr/g-C₃N₅ composites were prepared to improve the photocatalytic activity of g-C₃N₅. The photocatalytic property of AgBr/g-C₃N₅ composites was investigated using rhodamine B (RhB), methyl orange (MO) and methylene blue (MB) as the target dyes. The results showed that AgBr/g-C₃N₅ composites can enhance the photodegradation efficiency of dyes due to the reduced recombination rate of electron/hole pairs and improved visible light response. In addition, sample 35 wt% AgBr/g-C₃N₅ composite was the optimal photocatalyst, which exhibited good photodegradation efficiency to RhB (88.5%), MO (63.1%) and MB (98.0%). Moreover, the 35 wt% AgBr/g-C₃N₅ composite had good stability and reusability. The main active species of 35 wt% AgBr/g-C₃N₅ composite in the photocatalytic degradation process was •O₂^–. This work confirmed that AgBr/g-C₃N₅ composites can be used for the degradation of organic pollutants in water.

制备了一系列AgBr/gC ₃ N _{5复合材料以提高gC 3} N ₅的光催化活性。以罗丹明B（RhB）、甲基橙（MO）和亚甲基蓝（MB）为目标染料，研究了AgBr/gC ₃ N ₅复合材料的光催化性能。结果表明，AgBr/gC ₃ N ₅复合材料可以降低电子/空穴对的复合率并改善可见光响应，从而提高染料的光降解效率。此外，样品 35 wt% AgBr/gC ₃ N ₅复合材料是最佳光催化剂，对RhB（88.5%）、MO（63.1%）和MB（98.0%）表现出良好的光降解效率。此外，35wt%AgBr/gC ₃ N ₅复合材料具有良好的稳定性和可重复使用性。35wt%AgBr/gC ₃ N ₅复合材料在光催化降解过程中的主要活性物质是·O ₂ ^–。该工作证实AgBr/gC ₃ N ₅复合材料可用于水中有机污染物的降解。