稀土元素掺杂TiO_2光催化性能的研究  

Study on rare earth oxide doping on the phoyocatalytic activities of TiO_2

作　　者：计海峰[1] 张乃军[2] 王迪[1] 李忠玉[3] 王卫东[1] 

机构地区：[1]吉林化工学院石油化工学院,吉林吉林132022 [2]巴斯夫新戊二醇有限公司技术科,吉林吉林132002 [3]常州大学石油化工学院,江苏常州213164

出　　处：《大众科技》2014年第11期76-79,87,共4页Popular Science & Technology

基　　金：吉林省教育厅基金项目{吉教科合字[2009]第437号}

摘　　要：采用溶胶-凝胶法制备稀土元素(La3+、Ce3+)掺杂TiO2光催化剂,利用XRD、SEM、EDS、IR进行表征,并以亚甲基蓝为光降解反应对象,进行光催化降解实验,考察了掺杂稀土元素对TiO2光催化性能的影响。结果表明:La3+和Ce3+掺杂TiO2使得光催化剂的活性提高;煅烧温度为400℃时,掺杂La3+和Ce3+的TiO2光催化活性分别最佳,最佳掺杂量分别为1.0%和1.5%;0.5h光照后,二者降解率均达到90%以上。Rare earth oxide （La3＋、Ce3＋） doping on the photocatalytic activities of TiO2 were compared by sol-gel method, and were characterized by XRD, SEM, EDS and IR. Photocatalytic degradation of methylene blue was studied by doping rare earth elements on the photocatalytic properties of TiO2. Result shows that photocatalytic activties of La3＋ and Ce3＋ - doping TiO2 is improved. Photocatalytic activties of La3＋ and Ce3＋-doping TiO2 are optimum at 400℃, and the best doped contents are 1.0% and 1.5%, respectively. After 0.5h light, both the degradation rate reached over 90%.

关 键 词：TIO2 稀土元素 光催化 降解 

分 类 号：TQ03[化学工程]