Photocatalytic activity of BiVO4 enhanced by g-C3N4 coupling and hydrogenation treatment

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  • School of Materials Science and Engineering,China Jiliang University,Hangzhou 310018

Received date: 2019-03-21

  Online published: 2022-11-01

Abstract

The visible light-responsive BiVO4 photocatalyst was synthesized through a simple hydrothermal process,and BiVO4/g-C3N4 was then prepared by one-step calcination method.The hydrogenated BiVO4/g-C3N4 (H-BiVO4/g-C3N4) sample was finally obtained by treating BiVO4/g-C3N4 powder at 200℃ for 4h in a 20MPa hydrogen atmosphere.The successful synthesis of BiVO4/g-C3N4 composite photocatalysts were determined by XRD,FESEM and TEM measurements,and the disordered layer on the surface of the hydrogenated sample was observed.The DRS result showed that the visible light absorption of the modified sample was enhanced.The photocatalytic results showed that the degradation efficiency of the modified sample exhibited significantly improved to methylene blue under visible light in comparison with the pristine BiVO4 sample.The photoelectrochemical test confirmed that the improved photocatalytic activity of the H-BiVO4/g-C3N4 sample could be ascribed to the increased separation and transfer efficiencies of photogenerated carriers induced by the coupling of g-C3N4 and hydrogenation treatment.

Cite this article

Jiang Lidong, Chen Da, Qin Laishun, Liang Junhui . Photocatalytic activity of BiVO4 enhanced by g-C3N4 coupling and hydrogenation treatment[J]. New Chemical Materials, 2020 , 48(7) : 210 -214 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.048

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