硫酸改性的TiO_2的制备及光催化活性研究

摘要

采用硫酸溶液浸渍TiO2粉体的方法制备了硫酸改性的TiO2粒子。采用X射线衍射（XRD）,透射电镜（TEM）对产品进行了表征,并研究其对亚甲基蓝的催化降解活性的影响因素。结果表明：焙烧温度为450℃、硫酸浸渍浓度为1.0 mol/L、投加量为2.00 g/L、硫酸酸化后的二氧化钛粉末催化效果最佳。%Sulphate acid-modified TiO2 powder was prepared by impregnation method and characterized by XRD and TEM.The catalytic activity of the by-prepared particles for methylene blue degradation was investigated.It is shown from the results that the catalytic activity got optimal at the calcination temperature of 450 ℃,the sulphate acid concentration of 1.0 mol/L, TiO2 dosing quantity of 2.00 g/L.