Issue 25, 2016
From the journal:

RSC Advances

Effect of a static magnetic field on the preparation of MnOOH and Mn3O4 by a hydrothermal process

L. C. Dong,a   Y. B. Zhong,*a   S. Zhe,a   T. Y. Zhenga  and  H. Wanga  

* Corresponding authors

a Shanghai Key Laboratory of Advanced Special Steels, Shanghai University, Shanghai 200072, China
E-mail: yunboz@staff.shu.edu.cn

Abstract

In this paper, manganese oxides/oxyhydroxides were prepared by a low-temperature hydrothermal process in a static magnetic field. The products were analyzed with XRD, TEM, HRTEM and VSM. Single-crystalline nanowires (20 nm in diameter and 1 μm in length) of MnOOH were obtained under zero magnetic fields. However, some cubic particles of Mn3O4 were formed when a static magnetic field was applied. Furthermore, the quantity of Mn3O4 increased with the increase of the magnetic flux density. Quantitative thermodynamic calculation results showed that the magnetic Gibbs energy would change the direction of the chemical reaction to obtain Mn3O4.

Graphical abstract: Effect of a static magnetic field on the preparation of MnOOH and Mn3O4 by a hydrothermal process

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Article information

DOI
https://doi.org/10.1039/C5RA24350E
Article type
Paper
Submitted
18 Nov 2015
Accepted
02 Feb 2016
First published
03 Feb 2016

RSC Adv., 2016,6, 21037-21042

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Effect of a static magnetic field on the preparation of MnOOH and Mn3O4 by a hydrothermal process

L. C. Dong, Y. B. Zhong, S. Zhe, T. Y. Zheng and H. Wang, RSC Adv., 2016, 6, 21037 DOI: 10.1039/C5RA24350E

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