Synthesis and characterization of mesoporous silica films encapsulating titanium dioxide particles photodegradation of 2,4-dichlorophenol

被引：19

作者：

Adams, WA

Bakker, MG

Macias, T

Jefcoat, IA

机构：

[1] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA

[2] Mississippi State Univ, Dave C Swalm Sch Chem Engn, Starkville, MS 39762 USA

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2004年 / 112卷 / 03期

关键词：

titanium dioxide; mesoporous silica films; 2,4-dichlorophenol; photocatalysis; photodegradation;

D O I：

10.1016/j.jhazmat.2004.05.015

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Degussa P-25 TiO2 encapsulated in a SBA-15 mesoporous thin film silica matrix prepared using a block copolymer templating method. The film structure was characterized using small angle X-ray diffraction (XRD), variable angle spectroscopic ellipsometry (VASE), and polarized light microscopy. The photoactivity of the films was assessed using HPLC and UV-vis spectroscopy to study the photodegradation of 2,4-dichlorophenol, an industrial pollutant, in water under 350 nm irradiation. The unoptimized film was found to be approximately half as photoactive as an equivalent dispersion of TiO2 (C) 2004 Elsevier B.V. All rights reserved.

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页码：253 / 259

页数：7

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