Novel visible-light-driven Pt/BiVO4 photocatalyst for efficient degradation of methyl orange

被引：128
作者：
Ge, Lei [1 ]
机构：
[1] China Univ Petr, Dept Mat Sci & Engn, Beijing 102249, Peoples R China
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2008年 / 282卷 / 1-2期
关键词：
chemical synthesis; semiconductors; photocatalysis;
D O I：
10.1016/j.molcata.2007.11.017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Visible-light-induced Pt/BiVO4 composite photocatalyst has been synthesized by the impregnation method. The composition, crystallinity and photo-absorption of the as-prepared samples were characterized by powder X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and UV-vis diffused reflectance spectroscopy. The results indicate that the visible light absorption of the Pt/BiVO4 photocatalyst is greatly enhanced. The Pt element is present as PtCl4 and disperses in the composite samples. Photocatalytic activities of the Pt/BiVO4 samples were evaluated by the methyl orange decomposition under visible light irradiation. The results indicate that the photocatalytic efficiency is significantly improved after the Pt species was loaded. On the basis of experimental results, the mechanism of enhanced photocatalytic activity has been discussed. (C) 2007 Published by Elsevier B.V.
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收藏
页码：62 / 66
页数：5
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