摘要
以硝酸锌、钛酸四丁酯和活性炭为原料,采用真空吸附法制备了不同组成的Zn TiO2/AC.通过X射线衍射(XRD)和透射电镜(TEM)对催化剂进行了表征.选择较难降解的Cl3CCOOH作为探针分子考察了其光催化活性.结果表明,掺锌能提高TiO2/AC的催化活性,当Zn的摩尔分数为0.5%(相对TiO2)、处理温度为400℃,溶液的pH值为6时,Zn TiO2/AC催化剂具有很好的光催化活性.
The supported photocatalyst TiO_2/AC doping with Zn^(2+) was prepared by means of vacuum absorption-hydrolysis method.The catalyst was characterized by XRD and TEM.The photocatalytic activity of samples was evaluated by the photodegradation of Cl_3CCOOH.The result shows that the photocatalytic activities were significantly increased when the supported catalyst was doped with Zn^(2+) at optimal concentration (0.5 at.%).The highest photodegradation activity Cl_3CCOOH can be reached under condition of Zn-TiO_2/AC catalyst treated at 400 ℃ for 2 hours and pH=6 for the reaction solution.
出处
《感光科学与光化学》
SCIE
EI
CAS
CSCD
北大核心
2004年第4期266-271,共6页
Photographic Science and Photochemistry
基金
国家自然科学基金(90207026)
