预处理对TiO_2表面超亲水性的影响  

EFFECT OF PRETREATMENT ON SUPERHYDROPHILICITY OF TiO_2 FILMS

作　　者：管自生[1] 马颖[1] 曹亚安[1] 张昕彤[1] 姚建年[1] 

机构地区：[1]中国科学院化学研究所分子科学中心,北京100080

出　　处：《感光科学与光化学》2000年第3期204-207,共4页Photographic Science and Photochemistry

基　　金：中科院重点资助项目;国家重点基础研究 973项目!(G19990 3 3 0 );国家自然科学基金!重点项目( 5 993 2 0 40 )

摘　　要：在高湿度环境下 ,应用紫外光辐射对溶胶 凝胶TiO2 薄膜预处理 ,经过预处理的薄膜烧结后具有快速光致高度亲水特性和良好的光催化活性 .超亲水的薄膜能够吸附大量的酸性品红 ,在光照下薄膜将吸附的酸性品红逐渐降解掉 .High humidity and UV?light irradiation were used to pretreat the precursor films of TiO 2.It's shown that the pretreatment could enhance the superhydrophilicity of the resulting films and an optimization time existed.IR and Raman results showed that hydrolysis and condensation were promoted by pretreatment.The superhydrophilicity could last several weeks in the dark.Large amount of acid pinkie red was adsorbed on superhydrophilic TiO 2 films and underwent photodegradation gradually.

关 键 词：预处理 TI02 超亲水 光催化 

分 类 号：O644[理学—物理化学]