超声辅助磁性纳米四氧化三铁催化过氧化氢降解亚甲蓝染料的研究  

Sono-Assisted Degradation of Methylene Blue with H_2O_2 Catalyzed by Fe_3O_4 Magnetic Nanoparticles

作　　者：赵孝梨[1,2] 陈昱瑾[1,2] 董入源[1,2] 黄玉明[1,2] 

机构地区：[1]西南大学化学化工学院,重庆400715 [2]三峡库区生态环境教育部重点实验室,重庆400715

出　　处：《西南大学学报（自然科学版）》2012年第5期42-45,共4页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(21075099)

摘　　要：建立了一种基于超声辅助磁性四氧化三铁纳米微粒催化过氧化氢降解亚甲蓝染料的方法,研究了四氧化三铁纳米微粒浓度、过氧化氢浓度、pH值、反应时间、超声时间和温度等对催化降解反应的影响.结果表明,当四氧化三铁纳米粒子浓度为600mg/L,过氧化氢浓度为0.32mol/L,pH值为5,超声时间为3min,温度为30℃,反应时间为2h时,模拟染料废水中亚甲蓝的去除率最高可达到95%.A sono-assisted degradation method for methylene blue with H2O2 catalyzed by Fe3O4 magnetic nanoparticles was developed in the present study. Various factors affecting degradation of methylene were investigated including concentrstion of Fe3O4 nanoparticles, concentration of H2O2, solution pH, reaction time, ultrasonic time, and solution temperature. Under the optimal experimental conditions of 600 mg/L of nano-Fe3O4, 0.32 mol/L of hydrogen peroxide, pH at 5, 3 rain of ultrasonic time, 30 ℃ of solution temperature, and 2 h of reaction time, the removal efficiency of methylene blue was as high as 95%.

关 键 词：催化降解 磁性纳米四氧化三铁 亚甲蓝 过氧化氢 

分 类 号：X703[环境科学与工程—环境工程]