无机材料学报

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核-壳式单分散二氧化硅磁性微球的制备

答鸿; 朱以华   

  1. 华东理工大学超细材料制备与应用教育部重点实验室 上海 200237
  • 收稿日期:2001-07-25 修回日期:2001-09-24 出版日期:2002-07-20 网络出版日期:2002-07-20

Preparation of Core-Shell Monodispersed Magnetic Silica Microspheres

DA Hong; ZHU Yi-Hua   

  1. Key Laboratory for Ultrafine Materials of Ministry of Education; East China University of Science and Technology; Shanghai 200237; China
  • Received:2001-07-25 Revised:2001-09-24 Published:2002-07-20 Online:2002-07-20

摘要: 利用层层自组装的方法制备了粒径和组成可裁剪、具有核-壳式结构的单分散二氧化硅(SiO2)磁球.用X射线衍射(XRD)、透射电镜(TEM)、能谱(EDS)对样品的形貌、组成进行了分析;用电位的变化考察了磁性多层膜在胶体表面的逐步生长.

关键词: 自组装, 单分散, 二氧化硅磁球, 制备

Abstract: The fabrication of core-shell monodispersed magnetic silica microspheres with tailored dimensions and compositions was accomplished by layer-by-layer self-assemble. The morphology and compositions of samples were characterized by XRD TEM, EDS. The alternating ζ-potentials were utilized to indicate the stepwise growth of multilayer films on colloids.

Key words: self-assemble, monodispered, magnetic SiO2 microspheres, preparation

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