Ionic liquid-templated synthesis of mesoporous CeO2-TiO2 nanoparticles and their enhanced photocatalytic activities under UV or visible light

被引：121

作者：

Liu, Hong ^{[1
]}

Wang, Mengyang ^{[1
]}

Wang, Yong ^{[1
]}

Liang, Yuguang ^{[1
]}

Cao, Weiran ^{[1
]}

Su, Yun ^{[1
]}

机构：

[1] Shanghai Univ, Dept Chem Engn, 99 Shangda Road, Shanghai 200444, Peoples R China

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2011年 / 223卷 / 2-3期

基金：

中国国家自然科学基金;

关键词：

TiO2; CeO2; Mesoporous; Ionic liquid; Photocatalysis; Visible light; HYDROTHERMAL SYNTHESIS; TITANIUM-DIOXIDE; MIXED OXIDES; TIO2; WATER; DEGRADATION; MECHANISMS; BI2O3/TIO2; FILMS;

D O I：

10.1016/j.jphotochem.2011.06.014

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：

Mesostructrured CeO2-TiO2 nanoparticles with different CeO2 contents have been successfully synthesized using ionic liquid (1-hexadecane-3-methylimidazolium bromide. C16MIM+Br-) as a template by a hydrothermal method. The prepared materials were characterized by means of X-ray diffraction (XRD), nitrogen adsorption-desorption, transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectra analysis. The obtained CeO2-TiO2 materials exhibit large specific surface area and uniform pore sizes. Introduction of CeO2 species can effectively extend the spectral response from UV to visible area and enhance the surface hydroxyl groups of the mesoporous TiO2. The CeO2-TiO2 nanocomposites show high photocatalytic activity in the degradation of the p-chlorophenol aqueous solution under the UV or visible irradiation. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：157 / 164

页数：8

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