纳米金红石型TiO_2催化超声降解亚甲基蓝溶液  

Study on ultrasonic degradation of methylene blue in the presence of nanometer rutile TiO_2 catalyst

作　　者：张朝红[1] 马腾[2] 姜岳峰[2] 臧树良[2] 董殿波[1] 李红[2] 王君[2] 

机构地区：[1]辽宁大学环境科学系,沈阳110036 [2]辽宁大学化学系,沈阳110036

出　　处：《化学研究与应用》2006年第5期579-581,共3页Chemical Research and Application

基　　金：国家自然科学基金资助项目(20371023)

摘　　要：A variety of affecting factors on ultrasonic degradation of methylene blue in the presence of TiO2 were studied.The results indicated that the effects of ultrasonic degradation were more apparent in the presence of nanometer rutile TiO2 than of the solely ultrasonic ones.The sonochemical degradation kinetic of methylene blue in water was first-order.The degradation rate of methylene blue reached up to 80% in 120 min at ultrasonic frequency of 40kHz,power input of 50W,amount of catalyst of 1.0g/L,pH 5.16 and initial dye concentration of 5.0mg/L.Therefore,this method has better prospects in application.A variety of affecting factors on ultrasonic degradation of methylene blue in the presence of TiO2 were studied. The results indicated that the effects of ultrasonic degradation were more apparent in the presence of nanometer rutile TiO2 than of the solely ultrasonic ones. The sonochemical degradation kinetic of methylene blue in water was first - order. The degradation rate of methylene blue reached up to 80% in 120 min at ultrasonic frequency of 40kHz,power input of 50W, amount of catalyst of 1.0g/L, pH 5.16 and initial dye concentration of 5.0mg/L. Therefore, this method has better prospects in application.

关 键 词：亚甲基蓝 超声降解 纳米金红石型TiO2催化剂 

分 类 号：O614.411[理学—无机化学]