Affiliation:
1. Department of Applied Chemistry School of Science and Technology Meiji University 1‐1‐1 Higashimita, Tama‐ku Kanagawa 214‐8571 Japan
2. Low‐Carbon and Climate Impact Research Centre (LCCIC) School of Energy and Environment City University of Hong Kong Kowloon SAR Hong Kong
Abstract
The construction of Z‐scheme systems is an efficient strategy to realize water splitting under visible light irradiation. In particular, various photocatalysts can be employed for Z‐scheme systems when a reduced graphene oxide (RGO) is used as an electron mediator. Herein, a simple 1‐step process for the preparation of RGO‐(CoOx/BiVO4) composites is developed. In the developed preparation method, Co ions are oxidized to CoOx by photogenerated holes in BiVO4 accompanied by simultaneous reduction of GO to RGO by photoexcited electrons. The developed preparation method is simpler than a conventional method that contains loading with CoOx by impregnation and subsequent incorporation of RGO by photocatalytic reduction. Z‐schematic water splitting under visible light irradiation proceeds when RGO‐(CoOx/BiVO4) prepared by the 1‐step process is combined with Pt/(CuGa)0.5ZnS2. Moreover, the developed method is also able to be applied to the preparation of RGO‐(FeOx/BiVO4) composites.
Funder
Japan Society for the Promotion of Science
Cited by
1 articles.
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