制备条件对二氧化钛光催化活性的影响

Influence of preparation conditions on photocatalytic activities of TiO_2 ultrafine powder

以钛酸丁酯为原料,采用溶胶-凝胶法制备了粉末二氧化钛催化剂,讨论了不同条件如:钛酸丁酯的浓度、加水量、陈化时间、陈化温度、焙烧时间和温度等条件对光催化降解偶氮染料甲基橙活性的影响和机理。试验结果表明:此催化剂有高的催化活性。

Using Sol-Gel method, the photocatalysts of powder type TiO2 were prepared from tetrabutyl titanate and activity evaluation for photocatalytic decomposition of methyl orange. The influence of concentration of reaction, ageing time, reaction temperature, calclning temperature and calclning time on photocatalytic activity were investigated. The result shows good photocatalytic properties.