Hydrothermal synthesis of crystalline α-/β-MnO2 nanorods via γ-MnOOH nanorod precursors

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  • School of Chemical Engineering, Hefei University of Technology, Hefei 230009, China; Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei 230009, China

Published date: 05 Dec 2007

Abstract

The crystalline α-MnO2 and β-MnO2 nanorods have been successfully prepared via a facile hydrothermal method from γ-MnOOH nanorods precursor, respectively. The samples were characterized by means of X-ray diff raction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), field emission scanning electron microscope (FESEM) and Fourier transformed infrared spectra (FTIR). The morphology and structure of γ-MnOOH nanorods precursors have a great influence on the crystal structure of the obtained products. The α-MnO2 nanorods are prepared from the 100°C γ-MnOOH precursor, while the β-MnO2 nanorods are obtained from the 150°C γ-MnOOH precursor, respectively. Besides, the catalytic activity of the prepared α-MnO2 and β-MnO2 nanorods for the H2O2 decomposition has been investigated comparatively, and the latter shows better catalytic activity.

Cite this article

ZHANG Weixin, REN Xiangbin, YANG Zeheng, WANG Hua, WANG Qiang, HUANG Fei . Hydrothermal synthesis of crystalline α-/β-MnO2 nanorods via γ-MnOOH nanorod precursors[J]. Frontiers of Chemical Science and Engineering, 2007 , 1(4) : 365 -371 . DOI: 10.1007/s11705-007-0066-9

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