N、Ce共掺杂Ti02的制备及其光催化活性

采用溶胶．凝胶法制备沸石负载N、Ce共掺杂的二氧化钛光催化剂，以亚甲基蓝溶液为目标降解物研究该催化剂的光催化性能，并讨论催化剂浓度、pH值以及焙烧温度等对样品光催化性能的影响．结果表明：催化剂的焙烧温度为300℃时催化剂的催化活性最高，在反应体系中，催化剂浓度为60gru，pH=7时样品的光催化效率最佳，共掺杂的样品可见光活性高于单掺杂的样品．可见光辐射共掺杂的样品3h，亚甲基蓝的去除率可以达65％．

Preparation and Photocatalytic Activity of Cerium and Nitrogen-codoped TiO2

N and Ce co-doped TiO2 supported on artificial-zeolite （AZ） was prepared by sol-gel method. The photocatalytic activity was evaluated by degradation of methylene blue. The effects of amount of catalyst, the pH value and heating temperature on photocatalytic activity of the samples were discussed. The results indicated that the photocatalytic activity of co-doped photocatalyst was better than the single-doped photocatalyst. When the catalyst concentration was 60 g/L, the pH value was 7; the calcining temperature was 300 ℃, the photocatalytic activityt was best and degradation rate bereached 65% in 3 hours.