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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2016,Vol.32>> Issue(2)>> 551-557     doi: 10.3866/PKU.WHXB201511304         中文摘要
Bi2Sn2O7 Visible-Light Photocatalysts: Different Hydrothermal Preparation Methods and Their Photocatalytic Performance for As(Ⅲ) Removal
ZHUANG Jian-Dong1, TIAN Qin-Fen1, LIU Ping2
1 College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, P. R. China;
2 State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, P. R. China
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Bi2Sn2O7, synthesized through different hydrothermal routes (the microwave hydrothermal method (MH-BSO) and the traditional hydrothermal method (TH-BSO)), was used for photocatalytic removal of arsenic from aqueous solution. The as-synthesized Bi2Sn2O7 products were characterized by X-ray diffraction (XRD), N2 sorption-desorption, UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), transmission electron microscopy (TEM), electron spin resonance (ESR), X-ray photoelectron spectra (XPS), and electrochemistry technology. Under visible light irradiation, the MH-BSO sample exhibited a higher photocatalytic activity (up to 98.7%) than that of the TH-BSO sample during the oxidization of arsenite (AsO3)3-. The active species, O2 and hVB+, were identified as the primary active species responsible for As(Ⅲ) oxidation. In addition, a possible mechanism for the photo-oxidation of As(Ⅲ) over Bi2Sn2O7 is proposed.



Keywords: Bi2Sn2O7   Microwave hydrothermal method   Traditional hydrothermal method   Visible-light photocatalysis   As(Ⅲ) oxidation  
Received: 2015-10-06 Accepted: 2015-11-26 Publication Date (Web): 2015-11-30
Corresponding Authors: ZHUANG Jian-Dong Email: jdzhuang113@163.com

Fund: The project was supported by the National Natural Science Foundation of China (21303244) and Outstanding Youth Fund of Fujian Agriculture and Forestry University, China (XJQ201419).

Cite this article: ZHUANG Jian-Dong, TIAN Qin-Fen, LIU Ping. Bi2Sn2O7 Visible-Light Photocatalysts: Different Hydrothermal Preparation Methods and Their Photocatalytic Performance for As(Ⅲ) Removal[J]. Acta Phys. -Chim. Sin., 2016,32 (2): 551-557.    doi: 10.3866/PKU.WHXB201511304

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