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Abstract：
In this study, S-doped graphitic carbon nitride (S-C3N4) was prepared using the high-temperature polymerization method, and then S-C3N4/AgCdS heterojunction photocatalyst was obtained using the chemical deposition method through loading Ag-doped CdS nanoparticles (AgCdS NPs) on the surface of S-C3N4. Experimental results show that the AgCdS NPs were evenly dispersed on the surface of S-C3N4, indicating that a good heterojunction structure was formed. Compared to S-C3N4, CdS, AgCdS and S-C3N4/CdS, the photocatalytic performance of S-C3N4/AgCdS has been significantly improved, and exhibits excellent photocatalytic degradation performance of Rhodamine B and methyl orange. The doping of Ag in collaboration with the construction of a Z-scheme heterojunction system promoted the effective separation and transport of the photogenerated carriers in S-C3N4/AgCdS, significantly accelerated its photocatalytic reaction process, and thus improved its photocatalytic performance.
摘要：
在这项研究中,采用高温聚合法制备了S掺杂石墨碳氮化物(S-C3N4),然后通过化学沉积方法将Ag掺杂的CdS纳米颗粒（AgCdSNPs）负载在S-C3N4表面，获得了S-C3N4/AgCdS异质结光催化剂。实验结果表明，AgCdSNPs均匀分散在S-C3N4表面，形成了良好的异质结结构。与S-C3N4、CdS相比，AgCdS和S-C3N4/CdS,S-C3N4/AgCdS的光催化性能得到显著提高,并对罗丹明B和甲基橙表现出优异的光催化降解性能。Ag的掺杂与Z方案异质结系统的构建合作促进了S-C3N4/AgCdS中光生载流子的有效分离和传输，显著加快了其光催化反应过程，提高了其光催化性能。
