镧掺杂TiO_2/活性炭纤维复合光催化材料的制备及性能  

Preparation and Properties of Lanthanum Doping TiO_2/ACF Composite Photocatalyst

作　　者：陈鹏[1] 陈勇[1] 陈超[1] 谷科成[1] 

机构地区：[1]中国人民解放军后勤工程学院国防建筑规划与环境工程系,重庆401311

出　　处：《材料导报》2014年第10期42-45,66,共5页Materials Reports

基　　金：重庆市自然科学基金(CSTC2008BB7139)

摘　　要：采用溶胶-凝胶法,以硝酸镧和钛酸丁酯为原料,以活性炭纤维为载体,制备了镧掺杂TiO2/ACF复合材料,通过紫外灯照射,对甲醛气体进行光催化降解,考察材料的光催化活性。结果表明:镧的掺杂能够提高TiO2/ACF复合材料的光催化活性。当焙烧温度为400℃,镧的掺杂量为2%(摩尔分数)时,材料的光催化活性达到最佳效果。Lanthanum doping TiO2/ACF composite photocatalyst was prepared by sol-gel method with ACF,Ti（OC4H9）4 and La（NO3）3.Under the ultraviolet light the photocatalytic activity of the composite photocatalyst was evaluated by degradation of formaldehyde.The results showed that the photocatalytic activities of lanthanum doping TiO2/ACF composite photocatalysts are superior.The photocatalystic activity of the La-TiO2/ACF composite photocatalyst calcined under 400 ℃ and doped with 2％（molar ratro） of lanthanum was the best.

关 键 词：镧 掺杂 复合材料 光催化 

分 类 号：X506[环境科学与工程—环境工程]