以磷酸改性的HZSM-5分子筛为载体,采用溶胶-凝胶法制备TiO2/HZSM-5光催化剂,通过XRD,SEM,BET,FT IR和XPS进行表征.结果表明:TiO2均匀地分散在HZSM-5表面,没有发生TiO2颗粒的聚集.负载后的TiO2保持了锐钛矿晶体结构,TiO2的晶粒尺寸在负载后有所减小.TiO2/0.5HZSM-5的比表面积和对活性艳红X-3B的吸附量都随HZSM-5含量的增加而增加.负载后的TiO2光催化活性均高于纯TiO2,50％(质量分数)TiO2/0.5HZSM-5具有最高的活性,经紫外光照射2h可使活性艳红X3B降解93.4％,而染料在纯TiO2上的降解率只有61.0％.
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