中文摘要：

采用溶胶-凝胶方法表面修饰TiO2制备了几种POMs／TiO2复合光催化剂，考察了催化剂在紫外光照射下对模拟染料废水（茜素红溶液）的光催化降解行为．结果表明：POMs／TiO2复合催化剂较纯TiO2光催化降解茜素红活性明显提高，其中复合催化剂Cr3OSiW12／TiO2光催化降解模拟染料废水（茜素红溶液）效果最佳．反应最佳条件：催化剂为Cr3OSiW12／TiO2，多酸质量分数为0．5％，催化剂用量为15mg，茜素红溶液浓度为0．1mmol／L．茜素红降解质量分数可达74．6％．

英文摘要：

It is reported that the investigation on photocatalytic degradation of dye wastewater （Alizarin Red solution） under UV light irradiation using the composite of POMs/TiO2 as catalyst prepared by sel-gel method. The research results show that the photocatalytic activity of POMs/TiO2 catalyst is higher than that of TiO2, and the catalyst of Cr3OSiW12/TiO2 has the best efficiency to the photocatalytic degradation of dye wastewater （Alizarin Red solution）, this is because a synchronal effect of both POMs and TiO2 catalysts. The optimum reactio condition is as follows. The amount of catalyst Cr3OSiW12/TiO2 （POMs content：0.5% ） is 15 mg in 0.10 mmol/L Alizarin Red solution. Under the above condition, the percentage of degradation for Alizarin Red comes up to 74.6 %.