Bi掺杂TiO_2/高岭土光催化剂的制备及其光催化性能研究  

Study on preparation and photocatalytic activity of bismuth-doped TiO_2/kaolin composite photocatalyst

作　　者：吴称意[1,2] 覃春艳[1] 史伯安[1] 张升晖[1] 但悠梦[1] 

机构地区：[1]湖北民族学院化学与环境工程学院,恩施445000 [2]生物资源保护与利用湖北省重点实验室,恩施445000

出　　处：《化工新型材料》2016年第8期119-121,共3页New Chemical Materials

基　　金：湖北省自然科学青年基金项目(2014CFB618);湖北民族学院科研团队项目(MY2014T007);湖北民族学院博士科研启动基金(MY2013B017);生物资源保护与利用湖北省重点实验室开放基金项目(PKLHB1511)

摘　　要：采用溶胶-凝胶法,以钛酸四丁酯为原料、高岭土为载体制备了铋掺杂TiO_2/高岭土(Bi-TiO_2/kaolin)复合光催化剂,采用傅里叶红外光谱(FT-IR)、X射线衍射仪(XRD)和扫描电镜(SEM)等方法对Bi-TiO_2/kaolin复合光催化剂进行了表征,并利用其光催化降解结晶紫,考察了掺杂比、光照时间、pH值和催化剂用量等因素的影响。结果表明,在BiCl3与TiO_2的质量比为3∶10,光照时间为100min,催化剂用量为2.5g时,对结晶紫的去除率为91.4%。Bismuth-doped TiO2/kaolin composite photocatalyst was synthesized with tetrabutyltitanate, ferricnitrate and kaolin by sol-gel method. The samples were characterized by FT-IR, XRD and SEM respectively, and empolyed on pho- tocatalysis for degradation of crystal violet. The influence factors, doping ratio, irradiation time, pH and catalyst dosage were discussed. The results indicated that removal rate got to 91.4% when the optimum conditions for photocatalysis deg- radation of crystal violet were 3：10 of doping ratio, 100min of irradiation time,2.5g of catalyst dosage.

关 键 词：二氧化钛 光催化剂 掺杂 催化 去除率 

分 类 号：O643.36[理学—物理化学]