摘要
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 method with titanium sulfate as raw material, Hβ zeolite as carrier, and lanthanum as doped element. The methylene blue was used to evaluate the photocat- alytic activity of the catalyst samples. The results showed that the optimum preparation conditions of La-TiO2/Hβ were TiO2 loaded amount of 30 G （wt）, La doped amount of 0.5 % （mol）, aging time of 24h, calcinating temperature of 800℃. The degradation rate of methyl blue（2Omg/L）was up to 95. 1% with 2. 4g/L of La-TiO2/Hβ samples.
出处
《化工新型材料》
CAS
CSCD
北大核心
2014年第4期63-65,共3页
New Chemical Materials
基金
河北省唐山市科学技术局项目(13130251z)
河北省唐山市重点实验室项目(09150202A-2-4)
