Preparation and Characterization of γ-Fe2O3-ZnFe2O4 Composite Nanoparticles

Long Long Chen; Jun Ming Li; Xiao Min Gong; Jian Li

doi:10.4028/www.scientific.net/AMR.873.152

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 873Preparation and Characterization of...

Preparation and Characterization of γ-Fe₂O₃-ZnFe₂O₄Composite Nanoparticles

Abstract:

Using a chemically induced transition in an FeCl₂ solution, γ-Fe₂O₃ nanoparticles can be prepared from an amorphous precursor composed of FeOOH and Mg (OH)₂. Surface modification by adding ZnCl₂ during liquid-phase synthesis was attempted. The magnetization, morphology, crystal structure, and chemical species of as-prepared samples were characterized by vibrating sample magnetometer (VSM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray energy-dispersive spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS). The experimental results showed that the surface of the γ-Fe₂O₃ nanoparticles can be modified by adding ZnCl₂ to form composite nanoparticles with a γ-Fe₂O₃/ZnFe₂O₄ ferrite core coated with Zn (OH)₂ and absorbed FeCl₃6H₂O; this modification can be enhanced by additional NaOH.

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The Eighth China National Conference on Functional Materials and Applications

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Advanced Materials Research (Volume 873)

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152-157

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.873.152

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Online since:

December 2013

Authors:

Long Long Chen*, Jun Ming Li, Xiao Min Gong, Jian Li

Keywords:

Characterization, Composite, Modification, Nanoparticle, Preparation

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