Preparation and photocatalytic activity of silver and TiO2 nanoparticles/montmorillonite composites

被引：92

作者：

Liu, Jianjun ^{[1
]}

Li, Xinping ^{[1
]}

Zuo, Shengli ^{[1
]}

Yu, Yingchun ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Fac Sci, Beijing 100029, Peoples R China

来源：

APPLIED CLAY SCIENCE | 2007年 / 37卷 / 3-4期

关键词：

silver; titania; photooxidation; montmorillonite; nanocomposites;

D O I：

10.1016/j.clay.2007.01.008

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：

Ag-TiO2/Montmorillonite (Ag-TiO2/MMT) was synthesized as photocatalyst using TiCl4 hydrolysis to introduce nanosized TiO2 into the interlayer space of the montmorillonite (MMT).'Stable pillared TiO2/MMT was obtained by calcination at 500 degrees C, then silver was loaded by reduction of silver nitrate. The physico-chemical properties of the photocatalyst were determined by X-ray diffraction (XRD), infrared spectroscopy (IR), atomic absorption spectrophotometer (AAS), nitrogen gas adsorption (BET method) and UV-Visible spectra. The photooxidation activity for methylene blue (M. B.) degradation was as follows: Ag-TiO2/MMT > TiO2/ MMT > TiO2(P25). Among them Ag-TiO2/MMT had the highest photooxidation activity because of its larger specific surface caused by pillaring and loading of silver for improving its light absorption. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：275 / 280

页数：6

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