Energy-Efficient Photodegradation of Azo Dyes with TiO2 Nanoparticles Based on Photoisomerization and Alternate UV-Visible light

被引：82

作者：

Zhang, Hao ^{[1
]}

Chen, Da ^{[1
]}

Lv, Xiaojun ^{[1
]}

Wang, Ying ^{[1
]}

Chang, Haixin ^{[1
]}

Li, Jinghong ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Key Lab Bioorgan Phosphorus Chem & Chem Biol, Beijing 100084, Peoples R China

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2010年 / 44卷 / 03期

基金：

中国国家自然科学基金;

关键词：

TIO2-ASSISTED PHOTOCATALYTIC DEGRADATION; SELF-ASSEMBLED MONOLAYERS; ADSORPTION; AG;

D O I：

10.1021/es9029123

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Herein, we demonstrated a UV-vis light alternate photocatalysis (UVLAP) strategy in the photodegradation of azo dyes. The UVLAP of azo dyes over TiO2 catalysts exhibited significantly higher energy efficiency than the conventional UV process by 40%, which was attributed to the photoisomerization of azo dyes and the resulting diversity of dyes' cis and trans states in interfacial properties, including conductance and spatial effects. This UVLAP strategy could contribute to the energy-saving photodegradation of azo dyes and other pollutants with photoisomerization properties and facilitate the practical application of TiO2 in the environmental remediation.

引用

收藏

页码：1107 / 1111

页数：5

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