Synthesis of silica-coated Fe-based coordination polymers as precursor for preparation of Fe2O3@SiO2 core–shell nanoparticles

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• 作者：Fang Wu ; Ling-Guang Qiu ; Xia Jiang ; Mei Sun
• 关键词：Nanoscale coordination polymers ; Microwave ; assisted synthesis ; Core–shell structure ; Magnetic particles
• 刊名：Journal of Porous Materials
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：22
• 期：2
• 页码：559-563
• 全文大小：635 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Characterization and Evaluation Materials
  Physical Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1573-4854

文摘

We report a new synthetic route for preparation of Fe2O3@SiO2 core–shell nanoparticles by calcination of silica-coated Fe-based nanoscale coordination polymers (Fe-NCPs). Firstly, Fe-NCPs were synthesized by microwave-assisted method. The as-synthesized Fe-NCPs were then coated with silica as a shell via a sol–gel process. Finally, Fe2O3@SiO2 core–shell nanoparticles were achieved through the calcination of the silica-coated Fe-NCPs. The as-synthesized nanoparticles were investigated by scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, and N2 sorption–desorption isotherms. The as-synthesized nanoparticles exhibit core–shell structured, magnetic characteristics and high porosity.