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Visible Photocatalytic Activity Enhancement of ZnWO4 by Graphene Hybridization
Abstract
ZnWO 4 /graphene hybride (GZW-X) photocatalysts were synthesized via a facile in situ reduction of graphene oxide and ZnWO 4 in water. High efficiency for the degradation of methylene blue (MB) under both UV light and visible light was obtained for the GZW-X photocatalysts. The photocatalytic efficiency of ZnWO 4 /graphene-0.2 wt % under visible-light and UV-light irradiation was ∼7.1 and 2.3 times that of pristine ZnWO 4, respectively. The visible photocatalytic activity originated from the • OH and O 2 •–, which were formed by photosensitization of graphene in ZnWO 4 /graphene. The enhancement of UV photocatalytic light activity in ZnWO 4 /graphene was attributed to the high separation efficiency of photoinduced electron–hole pairs resulting from the promotion of HOMO orbit of graphene in ZnWO 4 /graphene.
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Metadata
- Authors
- Bai, X., Wang, L., & Zhu, Y.
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-11-19
- Volume
- 2
- Issue
- 12
- Pages
- 2769-2778
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W2321419002
- Cited by
- 283
- References
- 50
- FWCI
- 10.08
- Type
- journal article
- Language
- en
- Open access
- closed
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