期刊
ADVANCED FUNCTIONAL MATERIALS
卷 30, 期 39, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202001922
关键词
boron doping; defects; g-C(3)N(4)H(2)O(2)evolution; two-electron oxygen reduction
类别
资金
- National Natural Science Foundation of China [51579096, 51521006, 51909089]
- Funds for Innovative Province Construction of Hunan Province [2019RS3012]
- Key Research and Development Program of Hunan Province of China
- National Innovative Talent Promotion Program of China [2017SK2241]
- [2017RA2088]
Photocatalytic H(2)O(2)evolution through two-electron oxygen reduction has attracted wide attention as an environmentally friendly strategy compared with the traditional anthraquinone or electrocatalytic method. Herein, a biomimetic leaf-vein-like g-C(3)N(4)as an efficient photocatalyst for H(2)O(2)evolution is reported, which owns tenable band structure, optimized charge transfer, and selective two-electron O(2)reduction. The mechanism for the regulation of band structure and charge transfer is well studied by combining experiments and theoretical calculations. The H(2)O(2)yield of CN4 (287 mu mol h(-1)) is about 3.3 times higher than that of pristine CN (87 mu mol h(-1)), and the apparent quantum yield for H(2)O(2)evolution over CN4 reaches 27.8% at 420 nm, which is much higher than that for many other current photocatalysts. This work not only provides a novel strategy for the design of photocatalyst with excellent H(2)O(2)evolution efficiency, but also promotes deep understanding for the role of defect and doping sites on photocatalytic activity.
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