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HomeMaterials Science ForumMaterials Science Forum Vol. 688Facile Controlled Synthesis of Manganese Oxide...

Facile Controlled Synthesis of Manganese Oxide Hierarchical Microspheres by Hydrothermal Method

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Abstract:

MnO₂hierarchical microsphere has been synthesized by a facile and direct hydrothermal reaction between KMnO₄ and HCl without the aids of catalysts, surfactants or templates. The as-prepared microsphere, as characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) analysis and nitrogen adsorption and desorption, is in form of K_0.27MnO₂ (H₂O )_0.54, with a flower-like hierarchical microsphere structure and a BET surface area value of 52 m²/g. The morphology of the product can be simply tailed by controlled by reaction temperature or period and crystallinity can be modified by changing the concentrate of KMnO₄. In general, excessive KMnO₄ and low hydrothermal temperature are favor to forming flower-like hierarchical structure. Besides, the formation mechanisms of the hierarchical schemes are proposed.

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Periodical:

Materials Science Forum (Volume 688)

Pages:

107-115

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.688.107

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Online since:

June 2011

Authors:

Dong Yan Li, Yun Fa Chen

Keywords:

Hierarchical Microsphere, Hydrothermal Method, Manganese Oxide

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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