Fe3O4/镁铁类水滑石复合物的制备及吸附性能  

Preparation of Fe3O4/Mg-Fe layered double hydroxides and its adsorption performance

作　　者：吴永娟[1,2] 王晓兰[1] 闫俊英[3] 刘博[4] Wu Yongjuan;Wang Xiaolan;Yan Junying;Liu Bo(Department of Chemistry and Chemical Engineering,Shaanxi Xueqian Normal University,Xi’an 710100,China;Key Laboratory of Applied Surface and Colloid Chemistry(MOE),School of Chemistry&Chemical Engineering,Shaanxi Normal University,Xi’an 710062,China;College of Chemistry and Material Science,Hebei Normal University,Shijiazhuang 050024,China;Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]陕西学前师范学院化学与化工系,陕西西安710100 [2]陕西师范大学化学化工学院应用表面与胶体化学教育部重点实验室,陕西西安710062 [3]河北师范大学化学与材料科学学院,河北石家庄050024 [4]西安科技大学安全学院消防工程系,陕西西安710054

出　　处：《工业水处理》2019年第11期49-53,共5页Industrial Water Treatment

基　　金：国家自然科学基金(B070202,51904233);陕西省自然科学基金(2016JM2018,2017JQ5023);陕西省教育科学“十三五”规划2016年度课题(SGH16H133)

摘　　要：采用溶剂热-共沉淀两步法制得环境友好型磁性吸附剂四氧化三铁/镁铁类水滑石复合物(Fe3O4@Mg-Fe-LDH)。以甲基橙(MO)为模拟污染物,研究了各因素对Fe3O4@Mg-Fe-LDH吸附性能的影响。结果表明,MO的初始质量浓度为140mg/L时,Fe3O4表面包覆Mg-Fe-LDH为55%、吸附溶液的pH控制在4.5~7.0时吸附效果最佳,且吸附规律符合Langmuir模型。Fe3O4/Mg-Fe layered double hydroxides(Fe3O4@Mg-Fe-LDH),an environment friendly adsorbent,was prepared by a two-step solvothermal-coprecipitation method.Taking methyl orange(MO)as a simulated contaminant,the effects of various factors on the adsorption performance of Fe3O4@Mg-Fe-LDH were studied.The results showed that the optimum condition for MO removal was obtained,when the coated-quantity of Mg-Fe-LDH on Fe3O4 was 55%,the solution pH was controlled at 4.5-7.0 and the MO concentration was 140 mg/L.The adsorption of MO on Fe3O4@Mg-Fe-LDH conforms to the Langmuir model well.

关 键 词：四氧化三铁 镁铁类水滑石 甲基橙 吸附 

分 类 号：X703[环境科学与工程—环境工程] TQ424[化学工程]