【摘要】 采用溶胶-凝胶法(Sol-gel)制备了二氧化钛光催化薄膜,利用原子力显微镜(AFM)对薄膜表面结构进行观测.薄膜中二氧化钛粒子以纳米级分布,薄膜均匀、连续无龟裂.分别测试了纳米二氧化钛薄膜和普通二氧化钛颗粒在紫外灯照射下对CHCl3的催化降解速率.实验分析结果表明具有表面效应,量子尺寸效应的纳米二氧化钛薄膜有着更高的光催化活性和降解速率.更多还原

【Abstract】 Nanometer Photocatalytic Films were prepared by using the sol-gel method in this paper. The films structure was characterized By AFM. And the prepared nanometer films were dense and uniform. The photocatalytic activity of TiO2 films and TiO2 particals were studied under the conditions of degrading of CHC13 and UV irradiating. The results show that nanometer TiO2 films with surface function improve photocatalytic activity.更多还原