热处理工艺对La掺杂纳米TiO_2光催化性能的影响  

Influence of Thermal Treatment Processing on the Photocatalytic Activity of Lanthanum Doped Titanium Dioxide

作　　者：胡相红[1] 陈勇[2] 谷科成[2] 陈逸[2] 袁馨[2] 

机构地区：[1]武警北京指挥学院实验中心,北京100012 [2]后勤工程学院营房管理与环境工程系,重庆401311

出　　处：《材料开发与应用》2010年第4期21-23,共3页Development and Application of Materials

基　　金：重庆市自然科学基金项目(CSTC;2008BB7139)

摘　　要：以钛酸四丁酯和硝酸镧为原料,采用溶胶-凝胶法制备了La掺杂摩尔分数为2%的纳米TiO2,以TNT为目标降解物,研究了热处理方式对TiO2光催化性能的影响。结果表明:样品光催化性能最佳的热处理温度为500℃,升温速率为10℃/min,活化时间为2h,60min内对TNT的去除率达到了96%。The nanometer TiO2 powders doped with La3＋ in a molar fraction of 2% was prepared from Ti（OC4H9）4 and La（NO3）3 by sol-gel processing.The influence of thermal treatment processing on the photocatalytic activity of TiO2 was investigated through degradation of TNT.The results showed that the fitting thermal treatment temperature of sample is 500℃,the temperature rising rate is 10℃/ min and the activation time is 2 h,the degradation of TNT is 96% within 60 minutes.

关 键 词：热处理 La-TiO2 光催化性能 

分 类 号：O643.322[理学—物理化学]