期刊
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
卷 35, 期 11, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6641/abac95
关键词
photocatalysis; porous g-C3N4; electronic bridge; RhB degradation; benzylamine oxidation reaction
类别
资金
- Project of Research and Development Fund of Nanchong City [18YFZJ0041, 19YFZJ0107]
- Key Project of the Education Department of Sichuan Province [18ZA0474]
- Opening Project of Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education [LZJ2003]
The porous g-C3N4(PCN)/Sn/SnO ternary type-II heterojunction photocatalyst was synthesized by simple heat treatment combined with photodeposition. The results of a series of characterizations displayed that, with an electronic bridge structure, the type-II heterojunction photocatalyst has been successfully prepared. In the presence of PCN/Sn/SnO, RhB was degraded entirely in 40 min, and the conversion and selectivity of benzylamine oxidative reaction reached 99.9% within 6 h. The enhanced photocatalytic activity of PCN/Sn/SnO is attributed to high specific surface area and the metallic Sn(0)acting as electron bridges at the interface between SnO and PCN, which can accelerate the speed of photogenerated electrons transmission and inhibit recombination of photogenerated electron-hole pairs. After five cycles of operation, PCN/Sn/SnO maintained high photocatalytic activity. A reasonable photocatalytic reaction pathway was proposed via the free radical quenching test and mechanism analysis.
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