Issue 2, 2011
From the journal:

Nanoscale

Facile synthesis of magnetic metal (Mn, Fe, Co, and Ni) oxidesnanocrystalsvia a cation-exchange reaction†

Jiajia Ning,ab   Guanjun Xiao,a   Li Wang,b   Bo Zou,*a   Bingbing Liua  and  Guangtian Zoua  

* Corresponding authors

a State Key Laboratory of Superhard Materials, Jilin University, Changchun, P. R. China
E-mail: zoubo@jlu.edu.cn
Fax: +86-431-85168883
Tel: +86-431-85168882

b Department of Material Science and Engineering, Jilin Univeristy, Changchun, P. R. China

Abstract

Magnetic metal (Mn, Fe, Co, and Ni) oxides nanocrystals with small size and uniform size distribution are synthesized via a cation-exchange reaction. Two experimental stages are included in the synthesis of metal oxides nanocrystals. Firstly, Cu(OH)2 decomposes to CuO nanocrystals, induced by free metal cations. Compared to CuO nanocrystals produced without any free metal cation, the free metal cation has an important influence on the shape and size of CuO. Secondly, free metal cations exchange with the Cu2+ cation in the CuO nanocrystals to get Mn3O4, Fe2O3, CoO and NiO nanocrystals by cation-exchange reactions. The magnetic properties of these metal oxides nanocrystals have been investigated, all the nanocrystals are superparamagnetic at room temperature.

Graphical abstract: Facile synthesis of magnetic metal (Mn, Fe, Co, and Ni) oxides nanocrystals via a cation-exchange reaction

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Article information

DOI
https://doi.org/10.1039/C0NR00684J
Article type
Paper
Submitted
16 Sep 2010
Accepted
26 Oct 2010
First published
26 Nov 2010

Nanoscale, 2011,3, 741-745

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Facile synthesis of magnetic metal (Mn, Fe, Co, and Ni) oxides nanocrystals via a cation-exchange reaction

J. Ning, G. Xiao, L. Wang, B. Zou, B. Liu and G. Zou, Nanoscale, 2011, 3, 741 DOI: 10.1039/C0NR00684J

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