亚甲基蓝的CuO/TiO2-H2O2光催化脱色效果及影响因素  

THE DECOLORIZATION EFFECT AND INFLUENCE FACTORS OF METHYLENE BLUE IN CuO/TiO_2-H_2O_2 PHOTOCATALYTIC SYSTEM

作　　者：吉芳英[1] 邱雁[1] 徐璇[1] 袁云松[1] 

机构地区：[1]重庆大学 三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《环境化学》2008年第3期288-291,共4页Environmental Chemistry

基　　金：国家自然科学基金项目(50278101);教育部博士点基金(20070611009);重庆市2005年重点科技攻关项目(CSTC,2005AB7030)

摘　　要：以亚甲基蓝染料为对象,研究CuO/TiO2-H2O2光催化的脱色效果及影响因素.在CuO/TiO2光催化系统中,加入H2O2可以显著提高催化效率,但H2O2的加入量不宜太多;反应系统的pH值、催化剂用量以及初始色度等对CuO/TiO2-H2O2的光催化效果都具有显著影响.结果表明,在pH=7的溶液中,每1000ml溶液加入0.1gCuO/TiO2催化剂和10ml30%H2O2溶液,用ZY3-150型高压汞灯照射2h,色度为500倍的亚甲基蓝溶液脱色率高达90%.Photocatalytic decolorization effect and influence factors of difficult decolorizing organic wastewater were researched, and it based on methylene blue dye. It was found that the TiO2 prepared by hydrolyze method was anatase, and it exhibited excellent photocatalytic activity in degradation of methylene blue when CuO was supported on, because the separating of hole-electron can be promoted by CuO. Photocatalytic reaction in this CuO/TiO2 system can be accelerated by adding certain volume of H2O2. pH, photocatalysts dosage and initial chroma of this system affected photocatalytic efficiency obviously. Decolorization of 1000ml methylene blue of 500 times chroma reached 90% after 2h irradiation under high pressure Hg lamp with 0.1g CuO/TiO2 photocatalysts and 10ml 30%H2O2 in pH=7 condition.

关 键 词：光催化 CuO/TiO2-H2O2 亚甲基蓝 脱色 

分 类 号：X703[环境科学与工程—环境工程] TS224.6[轻工技术与工程—粮食、油脂及植物蛋白工程]