TiO_2/Fe_2O_3复合光催化超亲水性薄膜的研究

Study on photocatalytic and hydrophilic properties of TiO2/Fe2O3 composite thin film

采用溶胶-凝胶法及浸渍提拉法在普通的载玻片上制得了TiO2/Fe2O3复合薄膜,通过对薄膜及相应干凝胶和粉体的DSC、XRD、UV透射光谱等的测量,分析了Fe2O3的含量对TiO2/Fe2O3复合薄膜的光催化及超亲水性能的影响。结果表明:复合薄膜均优于纯TiO2薄膜的光催化活性,Fe2O3 的摩尔含量为0.5％时光催化活性最好;复合薄膜的亲水性能也随Fe2O3含量的不同而不同,Fe2O3的摩尔含量为0.05％～0.1％时得到了接触角为0°的超亲水性复合薄膜。

TiO2 /Fe2 O3 composite thin films were prepared on common glass substrates by sol-gel processing and dip-drawing method. The effect of Fe2O3 content on the photocatalytic and hydrophilic properties of composite films was studied by analyzing DSC, XRD and UV transmitted spectrum. The results indicate that the photocatalytic activities of composite films TiO2 films are superior to that of pure TiO2 film, and the film containing 0. 5% Fe2O3 has the best photocatalytic activity. The hydrophilicity is difference with variant Fe2O3 content, the films containing 0. 05%-0. 1% Fe2Os have the best hydrophilicity and the contact angles were 0°.