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A defective g-C3N4/RGO/TiO2 composite from hydrogen treatment for enhanced visible-light photocatalytic H-2 production
Wang, J; Sun, YC; Fu, LJ; Sun, Z; Ou, M; Zhao, SL; Chen, YH; Yu, FJ; Wu, YP
2020-11-21
Source PublicationNANOSCALE
ISSN2040-3364
Issue43Pages:22030
SubtypeArticle
AbstractPhotocatalytic H-2 evolution is a clean technology to alleviate energy and environmental issues. The limited light absorption and the separation efficiency of photogenerated charge carriers are the major hurdles constraining the application of numerous photocatalysts. Herein, we report a simple and effective strategy, a multistep heat-treatment method, to synthesise a defective g-C3N4/RGO/TiO2 composite to increase its rate of activity for H-2 production. The defects, nitrogen and oxygen vacancies, are simultaneously introduced on the surface of the g-C3N4/RGO/TiO2 composite. The vacancy defects essentially endow g-C3N4/RGO/TiO2 with a boosted photocatalytic H-2 evolution rate (4760 mu mol h(-1) g(-1)) under visible-light irradiation, which is higher than that of the most of g-C3N4/TiO2 composites. This is attributed to the improved visible-light absorption as well as the separation and transfer rate of photogenerated charge carriers arising from vacancy defects. This study may provide an avenue for preparing defective photocatalysts for efficient H-2 evolution.
DOI10.1039/d0nr05141a
WOS KeywordCHARGE SEPARATION ; GRAPHENE OXIDE ; G-C3N4 ; EVOLUTION ; CONSTRUCTION ; NANOSHEETS ; HYBRID ; WATER
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
PublisherROYAL SOC CHEMISTRY
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27615
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Wang, J,Sun, YC,Fu, LJ,et al. A defective g-C3N4/RGO/TiO2 composite from hydrogen treatment for enhanced visible-light photocatalytic H-2 production[J]. NANOSCALE,2020(43):22030.
APA Wang, J.,Sun, YC.,Fu, LJ.,Sun, Z.,Ou, M.,...&Wu, YP.(2020).A defective g-C3N4/RGO/TiO2 composite from hydrogen treatment for enhanced visible-light photocatalytic H-2 production.NANOSCALE(43),22030.
MLA Wang, J,et al."A defective g-C3N4/RGO/TiO2 composite from hydrogen treatment for enhanced visible-light photocatalytic H-2 production".NANOSCALE .43(2020):22030.
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