Studies of Fe-doped SiO2/TiO2 composite nanoparticles prepared by sol-gel-hydrothermal method

被引：28

作者：

Li, ZJ

Hou, B

Xu, Y

Wu, D

Sun, YH ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2005年 / 40卷 / 15期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1007/s10853-005-0521-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe-doped SiO2/TiO2 composite nanoparticles were directly prepared by sol-gel-hydrothermal process, and characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), thermal gravimetry (TG), X-Ray photoelectron spectroscopy (XPS), and UV-Vis diffuse reflectance spectra (DRS). It was found that the Fe3+ was well dispersed in solid solution Of SiO2/TiO2 composite nanoparticles that was about 10 nm with spherical morphology and rich silica layer external surface. It could effectively offer broadband shield for both UVB (290-320 nm) and UVA (320-400 nm). The results of Photodecomposition of methylene blue showed that the photoactivity of Fe-doped SiO2/TiO2 composite was minimized due to the addition of iron ion. (c) 2005 Springer Science + Business Media, Inc.

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页码：3939 / 3943

页数：5

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