Synthesis of novel photocatalytic InVO4-TiO2 thin films with visible light photoactivity

被引：45

作者：

Ge, Lei ^{[1
]}

Xu, Mingxia ^{[1
]}

Fang, Haibo ^{[1
]}

机构：

[1] Tianjin Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Adv Ceram & Machining Technol, Tianjin 300072, Peoples R China

来源：

MATERIALS LETTERS | 2007年 / 61卷 / 01期

关键词：

visible light; indium vanadate; thin films; titanium dioxide;

D O I：

10.1016/j.matlet.2006.04.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Novel InVO4-TiO2 thin films were synthesized by introducing nano InVO2 into the TiO2 thin films via a sol-gel method. The pholocatalytic efficiency of InVO4-TiO2 thin films was investigated by photodegrading of methyl orange in aqueous solution under visible light irradiation. A wide range of characterization techniques, such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), UV-vis absorption spectroscopy (UV-vis), were applied to characterize the obtained thin films. The results indicated that the InVO4-TiO2 thin films consist of uniform anatase TiO2 crystals of 70-80 nin with highly dispersed orthorhombic InVO4 nanocrystals. The decoloration of methyl orange results illustrated that the InVO4-TiO2 thin films with 0.5 wt.% InVO4 showed the best photoactivities under visible light irradiation, the decoloration rate reached 32.5% after irradiated for 15 h. The InVO4-TiO2 thin films exhibited photoactivity under visible light after doped InVO4 in the TiO2 films. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：63 / 66

页数：4

共 9 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].