稀土元素掺杂TiO_2光催化剂的改性及其性能和结构的研究  

The Study of Modification of Properties and Structure Using Rare Earth Doping TiO_2 Photocatalyst

作　　者：吴晶[1] 付雪君[1] 蒋沐林[1] 李刚[1] 杨霞[1] 陈慧英[1] 

机构地区：[1]中央民族大学生命与环境科学学院,北京100081

出　　处：《首都师范大学学报（自然科学版）》2012年第4期19-22,共4页Journal of Capital Normal University：Natural Science Edition

基　　金：中央高校基本科研业务费专项资金;中央民族大学"985"项目资金(No.MUC98504-14;MUC98507-08)

摘　　要：采用溶胶-凝胶法制备了稀土铽掺杂的纳米TiO2陶瓷光催化剂.研究了不同掺杂比例的铽(0.025%、0.05%、0.1%、0.15%、0.2%、0.25%、0.3%、0.35%)对二氧化钛催化活性的影响.污染水样的COD测试结果表明,掺杂铽的比例为0.15%时,TiO2的催化剂性能最好,COD去除率达90.9%.XRD结果表明铽掺杂纳米二氧化钛的主要晶型为锐钛矿.BET结果表明其催化活性与比表面积成正相关.Sol-gel method was used to prepare Terbium-doped nano-TiO2 ceramic photocatalyst.The effects of different ratio of terbium-doped（0.025%、0.05%、0.1%、0.15%、0.2%、0.25%、0.3%、0.35%）on the TiO2 was studied in this paper.The results of COD test on contaminated water show that TiO2 achieves the best catalytic activity when the ratio of terbium-doped is 0.15%,at which the COD removal rate was 90.9%.XRD results show that the main crystalline is anatase as the terbium-doped TiO2.And BET results indicate that the catalytic activity is positively correlated to specific surface area.

关 键 词：稀土 掺杂 TIO2光催化剂 改性 

分 类 号：O614.3[理学—无机化学] O614.41[理学—化学]