掺杂WO3的SiO2/TiO2的溶胶热液合成及光催化性能

doi:10.7517/j.issn.1674-0475.2008.05.349

影像科学与光化学 ›› 2008, Vol. 26 ›› Issue (5): 349-357.DOI: 10.7517/j.issn.1674-0475.2008.05.349

掺杂WO₃的SiO₂/TiO₂的溶胶热液合成及光催化性能

李银辉, 殷德宏, 陈赞, 王金渠

大连理工大学吸附与无机膜研究所, 精细化工国家重点实验室, 辽宁, 大连116012

收稿日期:2007-12-24 修回日期:2008-05-21 出版日期:2008-09-23 发布日期:2008-09-23
通讯作者: 殷德宏,E-mail:ydehong@dl.cn,Tel:0411-82920545.

Sol-Hydrothermal Synthesis and Photocatalytic Activity of WO₃ Doped SiO₂/TiO₂ Nanocomposites

LI Yin-hui, YIN De-hong, CHEN Zan, WANG Jin-qu

State Key Laboratory of Fine Chemicals, Institute of Adsorption and Inorganic Membrane, Dalian University of Technology, Dalian 116012, Liaoning, P. R. China

Received:2007-12-24 Revised:2008-05-21 Online:2008-09-23 Published:2008-09-23

摘要/Abstract

摘要： 采用溶胶-热液合成法制备了掺杂WO₃的SiO₂/TiO₂复合光催化剂,用X射线衍射、红外光谱、Zeta电位分析、BET和透射电镜对样品进行了表征,并以甲基橙降解评价了其光催化性能.结果表明:改性后的光催化剂表现出较高的光催化性能,WO₃和SiO₂不仅增加了锐钛矿TiO₂的稳定性,并阻止了TiO₂晶粒的聚集生长.

关键词: 溶胶-热液法, 二氧化钛, 氧化硅, 氧化钨, 甲基橙, 光催化降解

Abstract: WO₃ doped SiO₂/TiO₂ nano-particles were synthesized by sol-hydrothermal method and characterized by X-ray diffraction,Fourier transform infrared spectroscopy(FT-IR),Zeta potential,BET,and transmission electron microscopy.The photocatalytic activity was evaluated by photocatalytic degradation of methyl orange under UV light irradiation.The modified photocatalyst shows high photocatalytic activity.It was found that WO₃ and SiO₂ increased the stability of anatase TiO₂,and inhibited the grain aggregation and growth.

Key words: sol-hydrothermal, titania oxide, silica oxide, tungsten oxide, methyl orange, photocatalytic degradation

中图分类号:

O643
X7

李银辉, 殷德宏, 陈赞, 王金渠. 掺杂WO₃的SiO₂/TiO₂的溶胶热液合成及光催化性能[J]. 影像科学与光化学, 2008, 26(5): 349-357.

LI Yin-hui, YIN De-hong, CHEN Zan, WANG Jin-qu. Sol-Hydrothermal Synthesis and Photocatalytic Activity of WO₃ Doped SiO₂/TiO₂ Nanocomposites[J]. Imaging Science and Photochemistry, 2008, 26(5): 349-357.

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掺杂WO₃的SiO₂/TiO₂的溶胶热液合成及光催化性能

Sol-Hydrothermal Synthesis and Photocatalytic Activity of WO₃ Doped SiO₂/TiO₂ Nanocomposites

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