以钛酸四丁酯(Ti(OBu)4)、Ce(NO3)3、H2SO4为主要原料,采用溶胶-凝胶法制备了SO2-4/Ce-TiO2光催化剂,用XRD、IR、BET、XPS、TG-DTA等测定技术对所制得的试样进行了表征,并将其用于光催化降解二甲基二氯乙烯基磷酸酯的稀释液. 结果表明,SO2-4/Ce-TiO2中TiO2以锐钛矿晶型存在,并且具有超强酸特征,当n(Ce)/n(TiO2)=0.005,c(H2SO4)=0.5 mol/L时,焙烧温度为500 ℃是最佳制备条件,其光催化降解性能较Ce-TiO2有明显提高.
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