纳米TiO_2复合薄膜光催化降解甲基橙的研究

本文通过Sol Gel工艺在载玻片表面、多孔陶瓷表面及玻璃纤维表面制得了均匀透明的纳米TiO2复合薄膜,以甲基橙为研究对象,紫外灯为光源,研究了甲基橙初始浓度、光照时间、催化剂载体比表面、初始溶液的pH值对甲基橙降解率的影响,并比较了半导体耦合薄膜的光催化降解能力.研究结果表明:SnO2 TiO2复合膜相对于其它耦合膜及金属(La)掺杂膜有较高的降解率.

PHOTOCATALYTIC DEGRADATION OF METHYL ORANGE ON NANOMETER TiO2 COMPOSITE THIN FILMS

The evenly transparent nanometer TiO2 composite thin films prepared by Sol Gel processing were deposited on glass substrates,porous ceramics substrates and glass fiber substrates.The photocatalytic degradation of methyl orange in water was studied in cultural dish with UV lamp as light source.The effects of the initial concentration of methyl orange,carrier surface of catalyst,the light time and the pH value were also investigated.And the semiconductor coupling thin films were carried out for the photocatalytic degradation of methyl orange.The results showed that the SnO2 TiO2 composite thin films had higher photocatalytic degradation efficiency than that of the La doping TiO2 thin films.