Photocatalytic degradation of methyl orange with W-doped TiO2 synthesized by a hydrothermal method

被引：85

作者：

Tian, Hua ^{[2
,3
]}

Ma, Junfeng ^{[1
,2
]}

Li, Kang ^{[4
]}

Li, Jinjun ^{[3
]}

机构：

[1] China Bldg Mat Acad, State Key Lab Green Bldg Mat, Beijing 100024, Peoples R China

[2] Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266003, Peoples R China

[3] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China

[4] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266071, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2008年 / 112卷 / 01期

关键词：

semiconductors; X-ray diffraction; transmission electron microscopy; oxidation;

D O I：

10.1016/j.matchemphys.2008.05.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanosized W-doped TiO2 photocatalysts were synthesized by a simple hydrothermal method, and characterized by energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), transmission electron microscopy (TEM) and BET surface area analyzer. The photocatalytic activity of undoped TiO2 and W-doped TiO2 photocatalysts was evaluated by the photocatalytic oxidation degradation of methyl orange in aqueous solution. The results show that the photocatalytic activity of the W-doped TiO2 photocatalyst is much higher than that of undoped TiO2, and the optimum percentage of W doped is 2.0 mol%. The enhanced photocatalytic activity of the doped photocatalyst may be attributed to the increase in the charge separation efficiency and the presence of surface acidity. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：47 / 51

页数：5

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