Sand flower layered double hydroxides synthesized by co-precipitation for CO2 capture: Morphology evolution mechanism, agitation effect and stability

被引：34

作者：

Zeng, Shibi ^{[1
]}

Xu, Xiaoli ^{[1
]}

Wang, Shangkun ^{[1
]}

Gong, Qiankun ^{[1
]}

Liu, Rujun ^{[1
]}

Yu, Ying ^{[1
]}

机构：

[1] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2013年 / 140卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Nanostructures; Chemical synthesis; Electron microscopy; Adsorption; HOMOGENEOUS PRECIPITATION; CARBON-DIOXIDE; HYDROTALCITE; ADSORPTION; ALUMINUM; SIZE;

D O I：

10.1016/j.matchemphys.2013.03.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnesium aluminum layered double oxides (Mg Al-LDO) derived from calcination of layered double hydroxides (LDH) is one of the most capable candidates for CO2 capture. LDHs with sand flower and dense layered morphology are prepared by co-precipitation method at pH = 10 under different condition with and without stirring. The sand flower LDH prepared with stirring has better CO2 adsorption performance. Additionally, the sand flower morphology under calcination can be preserved very well, while the morphology can only remain stable below 100 degrees C after hydrothermal treatment and reconstruction. The formation process of the sand flower LDH is investigated in detail and the related morphology evolution mechanism is proposed. This study can provide insight into the effect of mechanical interaction on chemical reaction and give a new way to control the morphology of layered materials. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：159 / 167

页数：9

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