无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
无机盐工业

Fe3O4/δ-MnO2纳米片的制备及其对 亚甲基蓝的吸附研究

  • 王建芳 ,
  • 王 君 ,
  • 杨和平 ,
  • 周春生 ,
  • 舒唐新 ,
  • 徐 杰
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  • 商洛学院化学工程与现代材料学院,陕西省尾矿资源综合利用重点实验室,陕西商洛 726000
王建芳(1981— ),女,博士,副教授,主要从事新颖形貌金属氧化物的形貌研究;E-mail:peacefang_2006@163.com。

网络出版日期: 2020-03-06

Preparation of Fe3O4/δ-MnO2 nanosheet and its adsorption property of methylene blue

  • Wang Jianfang ,
  • Wang Jun ,
  • Yang Heping ,
  • Zhou Chunsheng ,
  • Shu Tangxin ,
  • Xu Jie
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  • Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resource,College of Chemical Engineering and Modern Materials of Shangluo University,Shangluo 726000,China

Online published: 2020-03-06

摘要

采用拓扑氧化法制备δ-二氧化锰六边形纳米片,通过共沉淀法控制pH=10,使Fe2+与Fe3+发生共沉淀形成四氧化三铁沉积于δ-二氧化锰纳米片表面,形成Fe3O4/δ-MnO2磁性六边形纳米片。研究了铁用量对Fe3O4/δ-MnO2结构和晶相的影响。利用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)等技术手段对其进行表征分析。研究了Fe3O4/δ-MnO2磁性纳米片对亚甲基蓝溶液的吸附行为,系统分析了吸附剂用量、亚甲基蓝初始浓度和吸附时间对吸附效率的影响。Fe3O4/δ-MnO2六边形纳米片尺寸大小均一,边长约为100 nm。该材料对亚甲基蓝表现出良好的吸附性能,当吸附时间为1 h时吸附量约为2.7 mg/g,去除率约为86.3%。

本文引用格式

王建芳 , 王 君 , 杨和平 , 周春生 , 舒唐新 , 徐 杰 . Fe3O4/δ-MnO2纳米片的制备及其对 亚甲基蓝的吸附研究[J]. 无机盐工业, 2019 , 51(10) : 93 -96 . DOI: 10.11962/1006-4990.2018-0607

Abstract

δ-MnO2 hexagonal nanosheets were prepared by topochemical oxidizing method. By controlling pH=10,Fe3O4 particles were formed by coprecipiting Fe2+ and Fe3+ and deposited on the surface of δ-MnO2,then the Fe3O4/δ-MnO2 ferromag netic nanoparticles were synthesized.The effect of iron amount on the structure and crystallinity of Fe3O4/δ-MnO2 was studied. The obtained materials were characterized by the means of X-ray diffraction(XRD) and field emission scanning electron microscopy(FESEM) etc..The absorption behavior of Fe3O4/δ-MnO2 ferromagnetic nanoparticles on the methylene blue solu tion was studied.The effects of adsorbent amount,the initial concentration of methylene blue and adsorption time on adsorption efficiency were systematically analyzed.Fe3O4/δ-MnO2 nanosheets with hexagonal morphology were uniform,with the lateral edge of about 100 nm.This material showed excellent adsorption property to methylene blue,and the adsorbing capacity of about 2.7 mg/g as well as the removing rate of about 86.3% after adsorbing for 1 h.
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