Citation: LIN Xue, GUO Xiao-Yu, WANG Qing-Wei, CHANG Li-Min, ZHAI Hong-Ju. Hydrothermal Synthesis and Efficient Visible Light Photocatalytic Activity of Bi₂MoO₆/BiVO₄ Heterojunction[J]. Acta Physico-Chimica Sinica, ;2014, 30(11): 2113-2120. doi: 10.3866/PKU.WHXB201409052 shu

Hydrothermal Synthesis and Efficient Visible Light Photocatalytic Activity of Bi₂MoO₆/BiVO₄ Heterojunction

1.
1. Key Laboratory of Preparation and Application Environmentally Friendly Materials, Ministry of Education, Jilin Normal University, Siping 136000, Jilin Province, P. R. China;
2. College of Chemistry, Jilin Normal University, Siping 136000, Jilin Province, P. R. China

Received Date: 30 June 2014
Available Online: 5 September 2014
Fund Project: 国家自然科学基金(21407059, 61308095) (21407059, 61308095)吉林省科技发展计划项目(20130522071JH, 20130102004JC, 20140101160JC)资助 (20130522071JH, 20130102004JC, 20140101160JC)

A Bi₂MoO₆/BiVO₄ photocatalyst with a heterojunction structure was synthesized by a one-pot hydrothermal method. Its crystal structure and microstructure were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and high-resolution transmission electron microscopy (HRTEM). The FESEM and HRTEM images indicated that Bi₂MoO₆ nanoparticles were loaded on the surface of BiVO₄ nanoplates to form a heterojunction. The ultraviolet visible (UV-Vis) diffuse reflection spectra (DRS) showed that the resulting Bi₂MoO₆/BiVO₄ heterojunction possessed more intensive absorption within the visible light range compared with pure Bi₂MoO₆ and BiVO₄. These excellent structural and spectral properties endowed the Bi₂MoO₆/BiVO₄ heterojunction with enhanced photocatalytic activity. It was found that the Rhodamine B (RhB) degradation rate with Bi₂MoO₆/BiVO₄ was higher than that with pure BiVO₄ and Bi₂MoO₆ under visible light (λ>420 nm) by photocatalytic measurements. The enhanced photocatalytic performance of the Bi₂MoO₆/BiVO₄ sample can be attributed to the improved separation efficiency of photogenerated hole-electron pairs generated by the heterojunction between Bi₂MoO₆ and BiVO₄, intensive absorption within the visible light range, and high specific surface area.
- Bi₂MoO₆/BiVO₄,
- Composite material,
- Nanostructure,
- Photocatalytic activity
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Hydrothermal Synthesis and Efficient Visible Light Photocatalytic Activity of Bi2MoO6/BiVO4 Heterojunction

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Hydrothermal Synthesis and Efficient Visible Light Photocatalytic Activity of Bi₂MoO₆/BiVO₄ Heterojunction