Facile controlled synthesis and growth mechanisms of flower-like and tubular MnO2 nanostructures by microwave-assisted hydrothermal method

被引：158

作者：

Li, Yongliang ^{[1
]}

Wang, Jiajun ^{[1
]}

Zhang, Yong ^{[1
]}

Banis, Mohammad Norouzi ^{[1
]}

Liu, Jian ^{[1
]}

Geng, Dongsheng ^{[1
]}

Li, Ruying ^{[1
]}

Sun, Xueliang ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2012年 / 369卷

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

Flower-like spheres; Nanotubes; Dissolution-crystallization; Oriented attachment; SHAPE-CONTROLLED SYNTHESIS; MANGANESE OXIDE; BETA-MNO2; NANORODS; RATIONAL GROWTH; MORPHOLOGY; NANOWIRES; NANOTUBES; SPECTRA;

D O I：

10.1016/j.jcis.2011.12.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Birnessite flower-like and alpha-type tubular MnO2 nanostructures were selectively synthesized through simple decomposition of KMnO4 under hydrochloric acid condition by controlling reaction temperature using a microwave-assisted hydrothermal method. The as-prepared samples were characterized in detail by various techniques including X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, Fourier transform-infrared spectroscopy, and Raman scattering spectroscopy. While the growth of flower-like birnessite-MnO2 might follow a widely accepted Ostwald ripening process, we proposed a formation mechanism of the nanotubular alpha-MnO2 based on our evidence, which was assembly of nanorods through an "oriented attachment" process. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：123 / 128

页数：6

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