La^(3+)掺杂及载体类型对纳米TiO_2薄膜光催化活性的影响  

EFFECT OF DOPING La^(3+) AND SUBSTRATES TYPE ON THE PHOTOCATALYTIC ACTIVITY OF NANOMETER TiO_2 THIN MEMBRANE

作　　者：单志强[1] 王晓林[2] 

机构地区：[1]黑龙江科技学院资环院,黑龙江哈尔滨150027 [2]山东纺织职业学院,山东潍坊261053

出　　处：《水处理技术》2006年第1期30-32,共3页Technology of Water Treatment

基　　金：黑龙江科技学院青年科学基金项目(04-29)

摘　　要：实验以钛酸四正丁酯及硝酸镧为原料,采用浸渍涂覆工艺,以溶胶-凝胶法在不同载体上制备纳米级二氧化钛薄膜,以甲基橙为模拟对象,研究了不同浓度的La3+掺杂对催化剂光活性的影响。结果表明:降解效率随载体、掺杂浓度不同而变,最佳的离子掺杂浓度也有差别。釉面瓷砖、铝、不锈钢载体掺杂0.5%La3+的二氧化钛薄膜对甲基橙有最高的降解效率,陶瓷载体掺杂0.05%La3+的降解效率最高,玻璃载体最佳La3+掺杂浓度为5,%而钛片载体最佳La3+掺杂浓度为300%。The nanometer TiO2 thin membrane on different substrates doped with La^3＋ was prepared from Ti（OC4Hg）4 and La（NO3）3 by Sol-Gel processing using dipping technique. The photocatalytic activity of membrane at different doping concentration in photocatalytic methyl orange was studied. The result showed that both the degraded rate and the optimum concentration depended on the change of doping concentration and substrates. When TiO2 thin membrane doped with 0.5% La^3＋ on the substrates of glazed ceramictite, aluminium and stainless stell, TiO2 membrane has the maximum degradation rate.

关 键 词：镧掺杂 二氧化钛薄膜 载体 光催化活性 

分 类 号：TQ031.7[化学工程]