Pure and modified TiO2 photocatalysts and their environmental applications

被引：184

作者：

Choi, Wonyong ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Sch Environm Sci & Engn, Pohang 790784, South Korea

来源：

CATALYSIS SURVEYS FROM ASIA | 2006年 / 10卷 / 01期

关键词：

photocatalyst; titanium dioxide; pollutant degradation; TiO2 surface modification; advanced oxidation process;

D O I：

10.1007/s10563-006-9000-2

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：

Semiconductor photocatalysis is a process that harnesses light energy in chemical conversions. In particular, its applications to environmental remediation have been intensively investigated. The characteristics of TiO2, the most popular photocatalyst, is briefly described and selected studies on the degradation/conversion of various recalcitrant pollutants using pure and modified TiO2 photocatalysts, which were carried out in this group, are reviewed. Photocatalytic reactions are multi-phasic and take place at interfaces of not only water/TiO2 and air/TiO2 but also solid/TiO2. Examples of photocatalytic reactions of various organic and inorganic substrates that are converted through the photocatalytic oxidation or reduction are introduced. TiO2 has been modified in various ways to improve its photocatalytic activity. Surface modifications of TiO2 that include surface platinization, surface fluorination, and surface charge alteration are discussed and their applications to pollutants degradation are also described in detail.

引用

页码：16 / 28

页数：13

共 70 条

[1] Industrial exploitation of photocatalysis: progress, perspectives and prospects [J].