期刊
RSC ADVANCES
卷 8, 期 68, 页码 39187-39196出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra08733d
关键词
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资金
- Specialized Research Fund for the Doctoral Program of Jiangsu University of Technology [KYY17011]
- Natural Science Foundation of Jiangsu Province [BK20181043]
- [KYH17020002]
Novel porous AgBr/Bi24O31Br10 (AB/BOB) heterojunction composites were prepared by a hydrothermal calcination-ion exchange route and their physico-chemical properties were characterized by XRD, XPS, SEM, EDX, UV-vis DRS, BET and electrochemical measurements. The photocatalytic activity of the composites consisting of different AB/BOB mass ratios was evaluated by degradation of methylene blue (MB) under visible light irradiation. Compared with pure AB and BOB, the porous 20% AB/BOB composite exhibits much enhanced photocatalytic activity with good cycling stability. The significant enhancement in photoactivity is contributed to by both a high adsorption capacity and the separation efficiency of photo-generated electron-hole (e(-)-h(+)) pairs via a Z-scheme mechanism. In addition, radical scavenging experiments confirm that the reactive OH radicals play an important role in the photocatalytic reaction. The novel (AB/BOB) heterojunction composites could have a promising application in treatment of various dyestuff wastewaters on a large scale.
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