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The Synthesis of ZnO Acicular Particles by the Hydrothermal Discharging-gas Method

Published online by Cambridge University Press:  31 January 2011

Wen-Jun Li
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
Er-Wei Shi
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
Ming-Yuan Tian
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
Wei-Zhuo Zhong
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
Zhi-Wen Yin
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
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Abstract

In this paper, a new hydrothermal method—discharging-gas method—is introduced. ZnO acicular particles with the ratio of length and diameter 16: 1 are synthesized by the hydrothermal discharging-gas method using a mixed solution of Zn(CH3COO)2 with NaNO2 as precursor at 190 °C for 1 h. The effects of reaction temperature and precursor concentration on formation of acicular particles are investigated. The results show that the main factor for formation of acicular particles prepared by the hydrothermal discharging-gas method is the extent of crystallinity of ZnO powders before releasing gas.

Type
Articles
Copyright
Copyright © Materials Research Society 1999

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