Modification of TiO2 nanorods by Bi2MoO6 nanoparticles for high performance visible-light photocatalysis |
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Authors: | Na LiLi Zhu Wei-De Zhang Yu-Xiang YuWen-Hui Zhang Mei-Fang Hou |
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Affiliation: | School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, People''s Republic of China |
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Abstract: | In this work, TiO2 nanorods were prepared by a hydrothermal process and then Bi2MoO6 nanoparticles were deposited onto the TiO2 nanorods by a solvothermal process. The nanostructured Bi2MoO6/TiO2 composites were extensively characterized by X-ray diffraction, scanning and transmission electron microscopy, X-ray photoelectron spectroscopy and UV-vis diffuse reflectance spectroscopy. The photocatalytic activity of the Bi2MoO6/TiO2 composites was evaluated by degradation of methylene blue. The Bi2MoO6/TiO2 composites exhibit higher catalytic activity than pure Bi2MoO6 and TiO2 for degradation of methylene blue under visible light irradiation (λ > 420 nm). Further investigation revealed that the ratio of Bi2MoO6 to TiO2 in the composites greatly influenced their photocatalytic activity. The experimental results indicated that the composite with Bi2MoO6:TiO2 = 1:3 exhibited the highest photocatalytic activity. The enhancement mechanism of the composite catalysts was also discussed. |
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Keywords: | Nanostructured composites Bi2MoO6/TiO2 Bi2MoO6 nanoparticles TiO2 nanorods Photocatalytic activity |
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