铝基复合光催化剂制备工艺参数的正交优化设计  

Orthogonal Design to Optimize the Technological Parameters of Preparing Aluminum-based Composite Photocatalyst

作　　者：鲁双[1] 叶红齐[1] 高莹[1] 韩凯[1] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083

出　　处：《稀有金属与硬质合金》2010年第3期9-12,共4页Rare Metals and Cemented Carbides

基　　金：2008年度高等学校博士学科点专项科研基金(200805330032)

摘　　要：采用溶胶-凝胶法,以片状铝粉为载体,在其表面进行TiO2包覆改性,制备出一种铝基复合光催化剂。通过正交试验设计研究制备工艺因素对样品光催化性能的影响规律,并利用XRD对其进行了分析与表征。试验结果表明:影响样品光催化性能的主要因素为煅烧温度。在水解温度30℃、pH值4.5、水酯比(水与钛酸丁酯的摩尔比)50、煅烧温度600℃的试验条件下,光催化3 h,样品对亚甲基蓝溶液的降解率达到93.5%。Aluminum-based composite photocatalyst was prepared by coating flake aluminum powders with TiO2 and using sol-gel method.The influences of technological parameters on the photocatalysis property were studied by orthogonal experiments.The samples were analyzed and characterized by XRD.The results show that the photocatalysis property is significantly affected by calcination temperature.The degradation rate of methylene blue is up to 93.5% through 3 h UV-lamp irradiation when hydrolysis temperature is 30 ℃,pH value 4.5,molar ratio of water to tetrabutyl titanate 50,and calcination temperature 600 ℃.

关 键 词：铝基复合光催化剂 片状铝粉 TIO2 溶胶-凝胶法 包覆 正交试验 

分 类 号：TG132.5[一般工业技术—材料科学与工程]