安徽农业科学2009，Vol.35Issue(19)：8833-8834,8843,3.
磷钨酸/SiO2 光催化降解甲基橙研究
Preliminary Study on Photocatalytic Degradation of Methyl Orange by Phosphotungstic Acid/SiO2
摘要
Abstract
[Objective] Heteropolyacid was loaded onto the surface of photocatalytic carrier effectively.[Method] The loaded phosphotungis acid photocatalyst, which prepared by supporting phosphotungis acid on SiO2 carrier synthesized by sol-gel process.The photocatalytic and mineralizable behaviors of the composites were evaluated by degradation of aqueous methyl orange solution under the irradiation of two UV lamps (254 nm).[Results] When the catalyst was irradiated 1.5 h, under the optimum conditions of the initial concentration of the methyl orange solution of 4 mg/kg, catalyst quantity of 4.2 g/L, the decoloring ratio of methyl orange was up to 98.8%,and its ratio of mineralization was up to 47.6%; while irradiated 6.0 h, the mineralizing ratio of methyl orange was up to 98.8% .The loaded catalysts can be reused 10 times and still keep well activity.[Conclusions] The results showed that the loaded phosphotungis acid catalysts revealed well photocatalysic activity on photodegradation of methyl orange, but the rates of decolor and mineralization weren't synchronous.关键词
磷钨酸/固载化/光催化剂/矿化Key words
Phosphotungis acid/Loaded/Photocatalyst/Mineralization分类
化学化工引用本文复制引用
刘汉甫,冼育剑,白先群,莫兰群,沈雪松,颜桂炀..磷钨酸/SiO2 光催化降解甲基橙研究[J].安徽农业科学,2009,35(19):8833-8834,8843,3.基金项目
桂林医学院药学院青年教师资助项目(2008-1-3). （2008-1-3）
