微波法制备膨润土负载掺银TiO2及其光降解催化性能研究

Microwave Preparation of Bentonite/Ag Doping TiO₂Photocatalysts and Its Photodegradation

摘要: 采用微波方法制备具有高活性、自然光响应的膨润土负载掺银TiO2光降解催化剂,并以甲基红为目标降解物评价光降解催化剂在自然光下的催化活性.结果表明:掺银TiO2成功负载于膨润土片层表面,当银的掺杂质量分数为0.5%时,焙烧温度为600℃时,合成的光降解催化剂在自然光照射下,对pH=6~8甲基红废水溶液的降解率可达97%以上.

Abstract: Highly efficient visible-light-induced bentonite Ag-doped TiO₂ photocatalysts were prepared by microwave method. The photocatalytic activity of the samples toward the methylene red was investigated under visible-light irradiation.The results showed that the Ag-doped TiO₂ was loaded on bentonite，and the synthesis photocatalytic activity degradation rate may reached above 97% when the Ag doped was 0.5%, the roasting temperature was 600 ℃, pH was 6~8.