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Research Article | Open Access

A novel 2D graphene oxide modified α-AgVO3 nanorods: Design, fabrication, and enhanced visible-light photocatalytic performance

Jian WUa, Liangyu LIb, Xing-ao LIa, Xin MINb( ), Yan XINGa( )
New Energy Technology Engineering Lab of Jiangsu Province, School of Science, Nanjing University of Posts & Telecommunications (NUPT), Nanjing 210023, China
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
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Abstract

Silver vanadates are promising visible-light-responded photocatalysts with suitable bandgap for solar absorption. However, the easy recombination of photogenerated carriers limits their performance. To overcome this obstacle, a novel 2D graphene oxide (GO) modified α-AgVO3 nanorods (GO/α-AgVO3) photocatalyst was designed herein to improve the separation of photocarriers. The GO/α-AgVO3 was fabricated through a facile in-situ coprecipitation method at room temperature. It was found that the as-prepared 0.5 wt% GO/α-AgVO3 exhibited the most excellent performance for rhodamine B (RhB) decomposition, with an apparent reaction rate constant 18 times higher than that of pure α-AgVO3 under visible-light irradiation. In light of the first-principles calculations and the hetero junction analysis, the mechanism underpinned the enhanced photocatalytic performance was proposed. The enhanced photocatalytic performance was ascribed to the appropriate bandgap of α-AgVO3 nanorods for visiblelight response and efficient separation of photocarriers through GO nanosheets. This work demonstrates the feasibility of overcoming the easy recombination of photogenerated carriers and provides a valuable GO/α-AgVO3 photocatalyst for pollutant degradation.

Keywords

α-AgVO3graphene oxide modified α-AgVO3 nanorods (GO/α-AgVO3)photocatalysisgraphene oxide (GO) nanosheetsin-situ coprecipitation processing

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Journal of Advanced Ceramics
Volume 11 Issue 2,
February 2022
Pages 308-320
DOI: 10.1007/s40145-021-0534-6
Cite this article:
WU J, LI L, LI X-a, et al. A novel 2D graphene oxide modified α-AgVO3 nanorods: Design, fabrication, and enhanced visible-light photocatalytic performance. Journal of Advanced Ceramics, 2022, 11(2): 308-320. https://doi.org/10.1007/s40145-021-0534-6

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Received: 26 May 2021
Revised: 25 August 2021
Accepted: 06 September 2021
Published: 11 January 2022
© The Author(s) 2021.

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