期刊
CATALYSIS TODAY
卷 355, 期 -, 页码 932-936出版社
ELSEVIER
DOI: 10.1016/j.cattod.2019.02.028
关键词
Heterostructured g-C3N4/ZnO; Light-assisted; Type II heterojunction; H-2 production
资金
- National Key R&D Program of China [2016YFA0202602]
- National Natural Science Foundation of China [U1663225, 21671155, 21805220]
- Hubei Provincial Natural Science Foundation [2018CFB242, 2018CFA054]
- Major programs of technical innovation in Hubei [2018AAA012]
- Program for Changjiang Scholars Innovative Research Team in University [IRT_15R52]
The type II heterostructured g-C3N4/ZnO nanorods arrays (NRAs) with intimate interface connection were successfully synthesized via a light-assisted method for photocatalytic H-2 production. Such type-II heterojunction between g-C3N4 and ZnO not only promotes the charge separation and transport but also extends light absorption to the visible light region. In addition, the high physicochemical stability of g-C3N4 layer keeps ZnO from photocorrosion during the reaction. Consequently, the heterostructured g-C3N4/ZnO NRAs demonstrate enhanced photocatalytic H-2 performance. In particular, the highest photocatalytic activity enhancement of g-C3N4/ZnO heterostructure is 3.3 times that of ZnO NRAs with a good stability of 85% retention rate after 5 cycles. Our work here presents an effective strategy to construct heterojunction between g-C3N4 and metal oxide semiconductors for significantly enhanced photocatalytic H-2 production.
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