作　　者： ; ; ; ; ;

机构地区： 华南农业大学理学院应用化学系

出　　处： 《涂料工业》 2009年第6期19-21,共3页

摘　　要： 以硫酸氧钛为原料通过常温水解沉淀及水热处理制备了纳米光触媒乳液。考察了水解pH值、稳定剂、氧化剂、热处理温度及热处理时间等条件对该乳液的光催化性能的影响。XRD和TEM检测结果表明:光触媒乳液中纳米TiO2颗粒晶体结构为锐钛型,平均粒径为10 nm。光催化活性评价表明:当水解溶液的pH值=8,以柠檬酸为稳定剂,在100℃下水热处理6 h后获得的纳米光触媒乳液具有最佳光催化活性。 The title Nano - photocatalysts emulsion was prepared using TiOSO4 as the precursor by ambient hydrolysis -precipitation and hydrothermal method. The influence of pH value, stabilizer, oxidant, temperature and time of heat treatment, on photocatalytical performance of nano - photocatalyst emulsion were investigated. Nano TiO2 particles in the emulsion were found by use of XRD and TEM an anatase phase and its average size was 10 nm. The results from the photoeatalytic degradation shows that the optimum products have been obtained when the pH value of photocatalyst emulsion was 8, with citric acid as the stabilizer, and heated in 100 ℃ for 6 h.

关 键 词： 纳米 光催化降解 水热沉淀法

领　　域： [化学工程]