微波辅助液相沉积法制备TiO_2薄膜光催化性能  

Photocatalystic Degradation Activity of TiO_2 Films Prepared by Microwave Assisted Liquid Phase Deposition

作　　者：任典君[1] 王荣昌[1] 夏四清[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《稀有金属材料与工程》2008年第6期989-994,共6页Rare Metal Materials and Engineering

基　　金：2005年度高等学校博士学科点专项科研基金(20050247016);教育部新世纪优秀人才支持计划(NCET-05-0387);科技部政府间(中国-丹麦)科技合作项目(S14NNP28);丹麦DANIDA奖学金项目

摘　　要：以微波辅助液相沉积法(MWLPD)制备用于污染物光催化降解的固定化TiO2,并与常规无微波辅助的液相沉积法所得样品进行比较。通过XRD和SEM等手段对TiO2薄膜进行表征,发现微波辐照能够加速纳米TiO2在载体表面沉积的速度。以罗丹明B为模型污染物进行光催化实验的结果表明,MWLPD所得样品的光催化性能是无辐照样品的4倍以上。MWLPD在常温下可以得到强度可靠、光降解性能良好的固定化TiO2,实现在不适宜高温处理的载体上(如聚氨酯泡沫)负载锐钛型TiO2。TiO2 films immobilized for photocatalystic degradation of contamination on the surface of polyurethane foam are prepared by microwave assisted liquid phase deposition （MWLPD） and compared with the normal liquid phase deposition （LPD） process in this study. It can achieve a rapid deposition rate and a high degree of crystallization at low temperature by the MWLPD process. The immobilized TiO2 films were investigated with XRD and SEM and testified by the photodegradation of rhodamine B for the photocatalystic activities. The results demonstrate that the TiO2 films with excellent property of photocatalystic degradation can be got by the MWLPD process at room temperature on the surface of substrates, which is not suitable for processing at high temperature. The photocatalystic degradation efficiency by MWLPD is 4-10 times higher than by LPD.

关 键 词：微波液相沉积法 低温 二氧化钛 聚氨酯泡沫 

分 类 号：TB383.2[一般工业技术—材料科学与工程]