锰掺杂WO_3-TiO_2复合光催化剂的制备及其性能研究  

Study on the preparation of Mn^(2+) doped WO_3-TiO_2 composite photocatalyst and its properties

作　　者：张定国[1] 杨婥[1] 刘芬[1] 

机构地区：[1]东华理工大学化学生物与材料科学学院,抚州344000

出　　处：《环境工程学报》2007年第4期44-47,共4页Chinese Journal of Environmental Engineering

基　　金：江西省自然科学基金资助项目(0520002)

摘　　要：溶胶-凝胶和浸渍相结合的方法制备锰掺杂WO3-TiO2复合光催化剂,RXD表征,考察WO3和Mn2+掺入量、焙烧温度、焙烧时间及催化剂用量对光催化降解甲基橙的影响。结果表明,500℃焙烧2 h,掺杂量n(Mn2+)∶n(WO3)∶n(TiO2)=0.8∶1∶100时,光催化活性最高,光催化降解甲基橙溶液,120 m in后,降解率达90%,比单纯TiO2的光催化活性提高81%。Mn^2＋ doped WO3-TiO2 composite photocatalysts were prepared by sol-gel and impregnation method and then characterized by XRD. Experiments of photocatalytic degradation of methyl orange were carried out. The effects of amount WO3 and Mn^2＋ doped, of calcinations temperature and time on these experiments are studied. The result shows that the performance of Mn^2＋ -WO3-TiO2 is the best, when n（Mn2.）： n（wo3）： n（TiO2） = 0. 8 ： 1. 0：100 and the claimed temperature is at 500 ℃. After 120 min, the degradation percentage of methyl orange is 90% , which is 81% higher than the activity of pure TiO2.

关 键 词：锰掺杂 WO3-TiO2复合 光催化 甲基橙 

分 类 号：O643[理学—物理化学]