氧化铁磁性纳米粒子催化降解废水中邻苯二酚的研究  

Study on Fe_3O_4 magnetic nanoparticles for the catalytic degradation of catechol

作　　者：冯春梁[1] 邹文祥[1] 李丽[1] 毛晓旭[1] 杨迎麟[1] 

机构地区：[1]辽宁师范大学化学化工学院功能材料化学研究所,辽宁大连116029

出　　处：《辽宁师范大学学报（自然科学版）》2010年第2期194-197,共4页Journal of Liaoning Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(60572009);辽宁省科技攻关项目(2005220024);辽宁省科技基金项目(99102004);辽宁省教育厅高校重点实验室项目(2008S134)

摘　　要：处理含酚废水是环境保护及酚类污染物综合利用的重要研究课题.利用Fe3O4磁性纳米粒子(Fe3O4MNPs)催化H2O2氧化降解邻苯二酚(CAT),研究了反应时间、pH值、温度、Fe3O4MNPs的用量以及反应计量比对CAT降解率的影响.结果表明,当Fe3O4MNPs、H2O2和CAT的浓度分别为0.27 g/L、33、0.2 mmol.dm-3时,室温(25℃)、pH3.5条件下反应45 min后,CAT的去除率可达到95%以上.Fe3O4MNPs制备简单,催化活性高、成本低廉、性质稳定、可回收再利用,在处理含酚废水领域具有广阔的应用前景.Setting up an economical and efficient method of treating with phenolic wastewater is an important research topic on environmental protection and the comprehensive utilization of phenolic pollutants.In this study,the catalysis of ferric oxide magnetic nanoparticles（Fe3O4 MNps） during the oxidative degradation of Catechol（CAT） in the present of H2O2 by spectrophotometry was studied.The catalytic reaction condition was optimized.It was found that when the molar concentration ratio of Fe3O4MNPs,H2O2 and CAT was 6∶ 165∶ 1,the removal efficiency of CAT reached the maximum（95%） after 45 min at pH 7 and 25 ℃.The results proved that Fe3O4 MNps possessed excellent catalytic activity,easy preparation,low cost as well as good stability and reusability.It shows a broad application prospect in the treatment of phenolic wastewater.

关 键 词：FE3O4 磁性纳米粒子 酚类化合物 废水 催化降解 

分 类 号：X703[环境科学与工程—环境工程]