Bi2O3/BiVO4@Graphene Oxide van der Waals Heterostructures with Enhanced Photocatalytic Activity toward Oxygen Generation

Bi, Yaxin and Yang, Yanling and Shi, Xiao-Lei ORCID: https://orcid.org/0000-0003-0905-2547 and Feng, Lei and Hou, Xiaojiang and Ye, Xiaohui and Zhang, Li and Suo, Guoquan and Chen, Jingeng and Chen, Zhi-Gang ORCID: https://orcid.org/0000-0002-9309-7993 (2021) Bi2O3/BiVO4@Graphene Oxide van der Waals Heterostructures with Enhanced Photocatalytic Activity toward Oxygen Generation. Journal of Colloid and Interface Science, 593. pp. 196-203. ISSN 0021-9797


Abstract

The van der Waals (vdW) integration enables to create heterostructures with intimate contact and bring new opportunities. However, it is not confined to layered materials but can also be generally extended to 3D materials. Multidimensional Bi2O3/BiVO4@graphene oxide (GO) van der Waals heterostructures are synthesized by one-pot wet chemistry method. Bi2O3/BiVO4 composite nanoparticles are self-assembled with GO framework by vdW interaction to form vdW heterostructures, in which GO framework allows short electron transport distance and rapid charge transfer and provides massive reactive sites. Such self-assembled heterostructures show a superior high photoactivity towards oxygen evolution with an enhanced oxygen generation rate of 1828 µmol h-1 g-1, nearly 3 times than that of pure BiVO4, attributed to the accelerated charge separation and transfer processes of Bi2O3/BiVO4@GO vdW heterostructures. This study indicates that our strategy provides a new avenue towards fabricating multi-dimensional vdW heterostructures and inspiring more innovative insights in oxygen evolution field.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 10 Mar 2021 23:52
Last Modified: 27 Apr 2021 04:42
Uncontrolled Keywords: BiVO4; Graphene oxide; Van der Waals; Heterostructures; Oxygen evolution
Fields of Research (2008): 09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Fields of Research (2020): 40 ENGINEERING > 4016 Materials engineering > 401605 Functional materials
Identification Number or DOI: https://doi.org/10.1016/j.jcis.2021.02.079
URI: http://eprints.usq.edu.au/id/eprint/41544

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