H2SO4-assisted hydrothermal preparation of γ-AlOOH nanorods

被引：27

作者：

He, Taobo ^{[1
]}

Xiang, Lan ^{[1
]}

Zhu, Wancheng ^{[1
]}

Zhu, Shenlin ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 17-18期

基金：

中国国家自然科学基金;

关键词：

powder technology; crystal growth; gamma-AlOOH nanorods;

D O I：

10.1016/j.matlet.2008.01.078

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A facile hydrothermal method was developed to synthesize gamma-AlOOH nanorods using AlCl3 and NH4OH as the reactants and H2SO4 as the morphology-directing agent. Amorphous Al(OH)(3) was formed by mixing AlCl3 and NH4OH solutions at room temperature and then the hydrothermal treatment of the amorphous Al(OH)(3) in dilute H2SO4 solutions at 240 degrees C for 16.0 h led to the formation of gamma-AlOOH nanorods with a preferential growth along [100] direction. The structure, morphology, size of the products were investigated by powder X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM) and selected area electron diffraction (SAED). Our experiments showed that the increase of H2SO4/Al(OH)(3) molar ratio from 0 to 0.05 was favorable for the formation of gamma-AlOOH nanorods with high aspect ratio (about 80). (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2939 / 2942

页数：4

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