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A facile green approach for synthesizing monodisperse magnetite nanoparticles

Published online by Cambridge University Press:  31 January 2011

Ling Li ,
Jun Ding  and
Junmin Xue
Junmin Xue*
Affiliation:
Department of Materials Science and Engineering, National University of Singapore, 117576 Singapore
*
a)Address all correspondence to this author. e-mail: msexuejm@nus.edu.sg
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Abstract

The synthesis of monodisperse magnetite nanoparticles (Fe3O4 NPs) has been widely investigated over the last decade. Among the various synthetic methods, thermal decomposition of iron acetylacetonate, Fe(acac)3, or the premade iron-surfactant complex, was demonstrated to be promising to obtain monodisperse Fe3O4 NPs with controllable size and morphology. However, toxic and expensive precursors or tedious experimental procedures are normally required in these approaches. In this communication, we report a facile chemical top-down method to synthesize monodisperse magnetite NPs by using rust, which is mainly composed of γ-Fe2O3, as the iron source and oleic acid as the capping agent. The particle size, and hence the magnetization, of NPs can be readily controlled by adjusting the rust/oleic acid ratio and reaction temperature. This process is a green chemical approach and is easy to be reproduced and scaled up, which could be developed as an effective way to convert waste materials into high quality nanocrystals.

Keywords

MagneticNanostructureChemical synthesis
Type
Materials Communications
Information
Journal of Materials Research , Volume 25 , Issue 5 , May 2010 , pp. 810 - 813
Copyright
Copyright © Materials Research Society 2010

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References

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