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Microwave-assisted synthesis of various gallium oxyhydroxide nanorods and their controllable conversion into different gallium oxide polymorphs

Published online by Cambridge University Press:  31 January 2011

Suxiang Ge ,
Lizhi Zhang ,
Huimin Jia  and
Zhi Zheng
Suxiang Ge
Affiliation:
Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China; and Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan 461000, China
Lizhi Zhang*
Affiliation:
Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
Zhi Zheng*
Affiliation:
Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan 461000, China
*
a) e-mail: zhanglz@mail.ccnu.edu.cn
b) e-mail: zhengzhi9999@yahoo.com.cn
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Abstract

Various α-GaOOH nanorods were synthesized through a microwave-assisted method at 80 °C. In the synthesis, Ga(NO3)3 was used as the gallium source, and urea, L-cysteine, and EDTA disodium salt were used as the additives. The thermal decomposition of the as-prepared α-GaOOH nanorods could selectively produce α-, β-, and ε-Ga2O3 nanorods. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, and cathodoluminescence were used to characterize the resulting samples. On the basis of characterization results, the possible growth mechanisms of these various GaOOH nanorods were proposed. This study provides a controllable method to prepare various gallium oxyhydroxide and gallium oxide nanorods.

Keywords

Chemical synthesisMorphologyPhase transformation

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Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 7 , July 2009 , pp. 2268 - 2275
Copyright
Copyright © Materials Research Society 2009

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