高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (10): 1709.doi: 10.7503/cjcu20170132

• 研究论文: 无机化学 • 上一篇    下一篇

Co2+/Dy3+掺杂纳米立方Fe3O4的热还原制备及磁靶向滞留性能

杨宇翔1(), 刘意成1, 赵敏1, 袁宏明3, 姚平平1, 黄艳1, 倪超英2()   

  1. 1. 华东理工大学化学与分子工程学院, 上海 200237
    2. Department of Materials Science and Engineering, University of Delaware, DE 19716, USA
    3. 吉林大学化学学院, 无机合成与制备化学国家重点实验室, 长春 130012
  • 收稿日期:2017-03-07 出版日期:2017-10-10 发布日期:2017-09-22
  • 作者简介:联系人简介: 杨宇翔, 男, 博士, 教授, 博士生导师, 主要从事磁性纳米材料方面的研究. E-mail:yxyang@ecust.edu.cn;倪超英, 男, 博士, 教授, 博士生导师, 主要从事先进复合材料方面的研究. E-mail:cni@udel.edu
  • 基金资助:
    国家自然科学基金(批准号: 20577010, 20971043)资助

Thermal Reduation Preparation of Co2+/Dy3+ Doped Cubic Fe3O4 and Their Magnetic Targeting Retention

YANG Yuxiang1,*(), LIU Yicheng1, ZHAO Min1, YUAN Hongming3, YAO Pingping1, HUANG Yan1, NI Chaoying2,*()   

  1. 1. School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai 200237, China
    2. Department of Materials Science and Engineering, University of Delaware, DE 19716, USA
    3. College of Chemistry, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,Jilin University, Changchun 130012, China
  • Received:2017-03-07 Online:2017-10-10 Published:2017-09-22
  • Contact: YANG Yuxiang,NI Chaoying E-mail:yxyang@ecust.edu.cn;cni@udel.edu
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.20577010, 20971043)

摘要:

采用热还原沉淀法制备了一系列Co2+/Dy3+掺杂的纳米立方MxFe3-xO4磁性颗粒. 利用X射线衍射仪、 透射电子显微镜和振动样品磁强计研究了不同含量掺杂离子对MxFe3-xO4晶体结构、 形貌及磁性的影响. 研究发现, 掺杂未改变母体的对称性, 但母体形貌逐渐从立方体向球体过渡; Co2+和Dy3+的掺杂对于铁氧体磁学性质的影响明显不同, 当Co2+实际掺杂量为0.44和Dy3+实际掺杂量为0.05时, MxFe3-xO4立方磁性粒子的饱和磁化强度(Ms)达到最大值, 分别为76.65和70.21 A·m2·kg-1. 与超顺磁性Fe3O4球体相比, 高磁性掺杂Fe3O4立方体在体外模拟磁流体磁靶向定位实验中显示出较高的滞留率.

关键词: 立方四氧化三铁, 掺杂, 磁性能, 体外模拟磁靶向, 晶格常数

Abstract:

Co2+/Dy3+ doped Fe3O4 nanoparticles(MxFe3-xO4) were synthesized by the thermal reduction and co-precipitation methods . The structure, morphology and magnetic properties of MxFe3-xO4 were characterized by means of X-ray diffractometer(XRD), transmission electron microscope(TEM) and vibrating sample magnetometer(VSM). The results show that the dopants did not change the maternal symmetry, and the maternal morphology gradually transformed from cube to sphere. The MxFe3-xO4 cubic magnetic particles have maximum saturation magnetization of 76.65 and 70.21 A·m2·kg-1, respectively, when Co2+ actual doping amount is equal to 0.44 and Dy3+ actual doping amount is equal to 0.05. Compared with the superparamagnetic Fe3O4, the cubic high magnetic doped Fe3O4 nanoparticles showed a high retention rate in the simulated magnetic fluid magnetic targeting experiment in vitro.

Key words: Cubic Fe3O4, Doping, Magnetic property, Magnetic targeting in vitro, Lattice constant

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