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Issue 3, 2011
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One-step synthesis of highly water-dispersible Mn3O4nanocrystals

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Abstract

Highly water-dispersible Mn3O4 nanocrystals with well-controlled size, size distribution and high crystallinity have been successfully synthesized through a modified polyol process. Poly(acrylic acid) is used as the capping agent, conferring upon the particles high water-dispersion, of which the carboxylate groups partially bind to the nanocrystal surface and the uncoordinated carboxylate groups extend into water. The water-dispersible Mn3O4 nanocrystals can be further transferred to nonpolar solvent by linking oleylamine molecules through electrostatic interaction. The as-prepared Mn3O4 nanocrystals exhibit ferromagnetic behavior at low temperature and weak paramagnetic behavior at room temperature. The Curie–Weiss temperature and the blocking temperature are 40 K and 32 K, respectively.

Graphical abstract: One-step synthesis of highly water-dispersible Mn3O4 nanocrystals

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Article information


Submitted
10 Sep 2010
Accepted
21 Oct 2010
First published
01 Dec 2010

Dalton Trans., 2011,40, 583-588
Article type
Paper

One-step synthesis of highly water-dispersible Mn3O4 nanocrystals

Y. Zhao, C. Li, F. Li, Z. Shi and S. Feng, Dalton Trans., 2011, 40, 583
DOI: 10.1039/C0DT01198C

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