AgBr Nanoparticles Anchored on CdS Nanorods as Photocatalysts for H2 Evolution

作者：Ren, Yuting; Dong, Tianao; Ding, Shuoping; Liu, Xiufan; Zheng, Haizhao; Gao, Linlin; Hu, Juncheng^*

来源：ACS Applied Nano Materials, 2021, 4(9): 9274-9282.

DOI：10.1021/acsanm.1c01802

• AgBr/CdS
• Ag-S bonds
• S-scheme heterojunction
• electron transfer
• photocatalysis

We designed and fabricated an AgBr/CdS S-scheme heterojunction with Ag-S bonds. It was found that the formed Ag-S bond served as a bridge to transfer photoinduced electrons from CdS to AgBr. The as-prepared AgBr/CdS materials showed remarkably enhanced performance and good stability for photocatalytic hydrogen evolution using triethanolamine (TEOA) as the sacrificial agent. Under visible light illumination, the 10% AgBr/CdS sample exhibited optimal activity (5406 mu mol h(-1) g(-1)) among all samples, which was 85 times higher than that of the pristine CdS (64 mu mol h(-1) g(-1)). Because of the formation of the AgBr/CdS S-scheme heterojunction and the rapid electron-transfer channel provided by Ag-S bonds, high charge separation and utilization efficiency were achieved, which contributed to its superior performance.