焙烧温度对钨酸铅的结构及光催化活性的影响  

Effect of Calcination Temperature on Structure and Photocatalytic Activity of PbWO4

作　　者：刘自力[1,2] 秦祖赠[2] 杨克迪[2] 陈胜洲[1] 哈成勇[3] 

机构地区：[1]广州大学化学化工学院,广东广州510006 [2]广西大学化学化工学院,广西南宁530004 [3]中国科学院广州化学研究所,广东广州510650

出　　处：《材料研究与应用》2008年第4期361-364,共4页Materials Research and Application

基　　金：国家自然科学基金资助课题(20466001);广西大学科学技术研究重点项目(2004ZD01);广州市教育局科研项目(62040);广西研究生教育创新计划资助项目(2008105930817D004)

摘　　要：采用沉淀法合成PbWO4光催化剂,以极难降解的糖蜜酒精废水为降解对象,研究PbWO4光催化剂的光催化性能.研究结果表明:在焙烧温度为730 K时,光催化剂PbWO4的晶体形成;光催化剂PbWO4的适宜焙烧温度为773 K,在该温度下焙烧2 h后获得的光催化剂PbWO4的禁带宽度为2.84eV,该催化剂可在2 h内使糖蜜酒精废水的色度催化降解90.2%.PbWO4 was prepared by precipitation method, and the photocatalytic activity of it was studied by degraded molasses fermentation wastewater. The results showed that the optimal calcination temperature of PbWO4 was 773 K. Calcined at 773 K for 2 h, the band-gap energy of PbWO4 is 2.84eV. The degradation of molasses fermentation wastewater is 90.2% in 2 h while PbWO4 was used as a photocatalyst. The PbWO4 crystalline phase formed above 730 K.

关 键 词：光催化剂 PBWO4 糖蜜酒精废水 降解 

分 类 号：O643.36[理学—物理化学]