污染物传质作用下的室内光催化空气净化研究  

RESEARCH ON THE IMPROVEMENT OF PHOTOCATALYTIC INDOOR AIR PURIFYING EFFICIENCY BY MASS TRANSFER

作　　者：鹿院卫[1] 李文彩[1] 盛建平[1] 王伟[1] 马重芳[1] 

机构地区：[1]传热强化与过程节能教育部重点实验室暨传热与能源利用北京市重点实验室,北京100022

出　　处：《工程热物理学报》2007年第5期868-870,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.50476036);传热强化与过程节能教育部重点实验室开放基金项目

摘　　要：光催化反应是表面反应,污染物必须到达催化剂表面才可被分解去除,同时光催化反应在污染物较高浓度条件下反应速率较高,而污染物较低浓度时则效果不佳。为了提高室内污染物低浓度条件下的催化反应速率,本文将光催化技术与活性炭吸附技术相结合,利用活性炭吸附功能,加强污染物向催化剂表面的传质,在催化剂表面形成污染物局部高浓度,提高室内污染物光催化反应速率,将室内污染物浓度降至国标规定的浓度范围内。For photocatalytic reaction arises on the catalyst＇s surface, only contaminants contacted with catalyst can be decomposed. Photocatalytic reaction rate is higher under the higher initial pollutant concentration. However, the concentration of indoor pollutants is usually very low. In order to enhance the photocatalytic reaction rate of contaminants in indoor pollutants level, this paper immobilized the TiO2 on the activated carbon（AC） to improve the local concentration of contaminants on the surface of photocatalyst TiO2 by the absorption of AC. So the indoor contaminants with low level concentration can be decomposed to the range of indoor air quality standards.

关 键 词：传质 光催化 空气净化 反应速率 

分 类 号：X51[环境科学与工程—环境工程]