以硫酸钛为钛源,Hβ分子筛为载体,La为掺杂元素,采用共沉淀法制备了La-TiO2/Hβ复合光催化剂,并以亚甲基蓝的光催化降解为探针反应,评价了其光催化性能。结果表明,催化剂适宜的制备条件是:TiO2负载量为30%(wt),La掺杂量为0.5%(mol),老化时间为24h,焙烧温度为800℃。当用2.4g/L催化剂样品处理20mg/L的亚甲基蓝溶液时,降解率达95.1%。 La-TiO2 / Hβ composite photocatalyst was prepared by coprecipitation using titanium sulfate as titanium source and Hβ molecular sieve as carrier, and La as doping element. The photocatalytic degradation of methylene blue performance. The results show that the optimum conditions for the preparation of the catalyst are as follows: the loading of TiO2 is 30% (wt), the content of La is 0.5% (mol), the aging time is 24h and the calcination temperature is 800 ℃. The degradation rate was 95.1% when 20 mg / L methylene blue solution was treated with 2.4 g / L catalyst sample.