印迹型TiO_2光催化剂的制备及性能研究  

Preparation and Its Properties of Molecularly Imprinted TiO_2 Photocatalysts

作　　者：周婉媛[1] 尹佳音[1] 伊玉[1] 姬广凯[1] 李晔[2] 许士洪[1] 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]武汉理工大学资源与环境工程学院,武汉430070

出　　处：《武汉理工大学学报》2014年第2期111-114,共4页Journal of Wuhan University of Technology

基　　金：上海市自然科学基金(11ZR1400400);中央高校基本科研业务费专项资金(13D111308)

摘　　要：以钛酸四正丁酯作为钛源和功能单体,对羟基苯甲酸乙酯作为模板分子制备出了印迹型二氧化钛光催化剂。X射线衍射结果表明,该催化剂为锐钛矿相和金红石相混晶。光催化降解实验表明,在功能单体与模板分子摩尔比为5∶1,煅烧温度和时间分别为550℃和2h时,该光催化剂具有最佳的催化活性;经过12h光催化降解反应,其对目标分子对羟基苯甲酸乙酯的降解率可达90%,是非印迹型光催化剂的2.1倍。A molecularly imprinted TiO2 photocatalyst was prepared by sol-gel method using tetra-n-butyl titanate as titanium source and functional monomer and ethylparaben as template molecule. The XRD results indicate that the pre- pared photocatalyst is composed of anatase and futile. When the mole ratio of functional monomer and template molecule is 5 ： 1 when calcined at 550 ℃ for 2 h, the prepared photocatalyst shows the best photocatalytic activity. In the photocata- lytic degradation experiments, ethylparaben solution for 12 h under UV irradiation indicates that the removal rate reaches 90% and the degradation efficiency of molecularly imprinted TiOz photocatalyst is 2. 1 times faster than that of non-im- printed photocatalyst.

关 键 词：分子印迹 光催化剂 对羟基苯甲酸乙酯 

分 类 号：O64[理学—物理化学]