Synthesis and Formation Mechanism of Solid and Hollow Alumina Microspheres at the Water-oil Interface

被引：1
|
作者：
Zhang, Liangmiao [1 ]
Han, Ling [1 ]
Zhang, Hao [1 ]
Shen, Shanshan [1 ]
Lu, Wencong [1 ]
机构：
[1] Shanghai Univ, Dept Chem, Shanghai, Peoples R China
来源：
MECHANICAL AND AEROSPACE ENGINEERING, PTS 1-7 | 2012年 / 110-116卷
关键词：
hollow sphere; W/O/W emulsion; Formation Mechanism; SPHERES; NANOTUBES; SURFACTANTS; FABRICATION; EMULSIONS;
D O I：
10.4028/www.scientific.net/AMM.110-116.997
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
NH4Al(OH)2CO3 (AACH) hollow spheres and solid spheres were successfully synthesized with water in oil in water (W/O/W) emulsion, applying the liquid-to-liquid-phase boundary of the micellar system as a template. During the facile procedure, no high pressure, high temperature, or other complex reaction conditions were required. Transmission electric microscope (TEM) images showed that all the hollow structural products have a good spherical morphology with an average diameter of 1 pm. The as-synthesized spheres had large diameters and thin shells of about 30 nm composed of numerous small nanocrystals. In addition, the AACH product can be calcined into Al2O3 without changing its shape.
引用
收藏
页码：997 / 1002
页数：6
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