Synthesis and magnetic properties of iron/silica core/shell nanostructures

Shufen Wang, Hongming Cao, Feng Gu, Chunzhong Li, Guangjian Huang

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41 Citations (Scopus)

Abstract

Magnetic iron/silica core/shell nanostructures were prepared by reducing the initially formed α-Fe2O3/SiO2 composites prepared via a sonication-assisted Stöber process. Monodisperse α-Fe2O3 nanocrystals were prepared by a simple solution method using PEG as a surfactant. The products were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, (high-resolution) transmission electron microscopy ((HR)TEM), scanning electron microscopy (SEM) and magnetic hysteresis loops. After the reduction process, the silica coating can protect the Fe core from oxidation effectively. And the formed Fe/SiO2 nanostructures show better magnetic behavior, which is promising in targeted drug delivery systems.

Original languageEnglish
Pages (from-to)560-564
Number of pages5
JournalJournal of Alloys and Compounds
Volume457
Issue number1-2
DOIs
Publication statusPublished - 12 Jun 2008
Externally publishedYes

Keywords

  • Magnetic measurements
  • Nanostructured materials

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