TiO_2/SnO_2的制备及其光催化降解甲基橙

Preparation of TiO_2/SnO_2 and Its Photodegradation of Methyl－ orange

采用硬脂酸法制备出 TiO2/SnO2复合光催化剂，用 XRD、 TEM等手段对所得粉体进行表征；以甲基橙溶液为模拟废水，考察 TiO2/SnO2光催化剂活性。结果表明：与纯 TiO2相比， TiO2/SnO2的光催化活性有较大提高，当 SnO2的掺入量为摩尔比 5.6％时催化活性最高。

TiO2/SnO2 composite photocatalysts have been prepared by stearic acid method. The obtained nanocrystallines were characterized by XRD and TEM. The composite particles have been employed in photocatalytic degradation of methyl－ orange. The results show that the photocatalytic activity of the composite particles is higher than that of pure ultrafine TiO2 , and the optimum loading of SnO2 is 5.6％ .