摘要
TiO2光催化在废水处理、空气净化等环保领域展示出诱人前景。纳米TiO2光催化剂的负载化是实现其产业化的关键步骤之一。多孔吸附剂与纳米TiO2复合可提供对污染物的高浓度吸附环境,提高TiO2分散度,解决催化剂分离难题,是光催化领域的研究热点之一。本文对近年来国内外多孔吸附剂与纳米TiO2复合的发展情况进行了综述,着重介绍了负载型TiO2光催化剂的固定化方法、多孔吸附剂类型以及负载对光催化活性的影响机理。
TiO2 photocatalysis has exhibited attractive perspective in various applications of environmental protection field,especially for waste water treatment and air purification. It is necessary to immobilize the nano-sized titania onto supports for its application. Composite photocatalyst realized by loaded TiO2 onto porous adsorbent exhibited high activity and better separation performance due to the high pollutant-adsorbed concentration and better TiO2 dispersion. In this paper,the progress of preparation and photocatalytic properties of TiO2/adsorbent composite photoeatalyst was reviewed. Furthermore, immobilization methods,types of porous adsorbent and mechanism of adsorbent for the enhanced photocatalytie activity were emphasized.
出处
《化学通报》
CAS
CSCD
北大核心
2008年第10期755-764,共10页
Chemistry
基金
国家自然科学基金项目(30771692)
教育部新世纪优秀人才资助计划
教育部博士点基金项目(20050225006)资助
关键词
TIO2
吸附剂
光催化
负载
机理
Titanium dioxide, Adsorbent, Photocatalytic, Loaded, Mechanism
