Synthesization and crystallization mechanism of nano-scale γ-AIOOH with various morphologies

Nano-scale γ-AIOOH with various morphologies, such as whisker, bar, ball, and sheet, was synthesized successfully and control- lably through a facile hydrothermal method just by adjusting the pH value of the solvent. Based on the analysis of the experimental data, the growth mechanism of nano-scale...

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Bibliographic Details
Published inInternational journal of minerals, metallurgy and materials Vol. 17; no. 3; pp. 376 - 379
Main Author Bao-hong Hao Ke-ming Fang Lan Xiang Qiang Liu
Format Journal Article
LanguageEnglish
Published 2010
Subjects
AlOOH
实验数据
水热合成法
水热过程
纳米级
结晶机制
高pH值
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Summary:Nano-scale γ-AIOOH with various morphologies, such as whisker, bar, ball, and sheet, was synthesized successfully and control- lably through a facile hydrothermal method just by adjusting the pH value of the solvent. Based on the analysis of the experimental data, the growth mechanism of nano-scale γ-AlOOH in the hydrothermal process was established. It is proposed that the growth unit and the growth direction are determined by the pH value of the solution and the growth unit, respectively. One-dimensional γ-AlOOH, such as whisker and bar, is formed in lower pH ranges, while two-dimensional γ-AlOOH sueli as sheet is formed only in high pH environment following the plane expansion crystallization mechanism.
Bibliography:boehmite
morphology control
crystallization mechanism
growth unit
TQ133.1
boehmite; morphology control; crystallization mechanism; growth unit; aggregate
11-5787/T
TB383
aggregate
ISSN:1674-4799
1869-103X