Morphology-controlled hydrothermal synthesis of MnCO3 hierarchical superstructures with Schiff base as stabilizer

被引：37
|
作者：
Hu, He [1 ]
Xu, Jie-yan [1 ]
Yang, Hong [1 ]
Liang, Jie [1 ]
Yang, Shiping [1 ]
Wu, Huixia [1 ]
机构：
[1] Shanghai Normal Univ, Dept Chem, Shanghai 200234, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Inorganic compounds; Nanostructures; Structural materials; Crystal structure; CARBONATE MICROPARTICLES; MINERALIZATION PROCESS; METAL CARBONATE; CRYSTALLIZATION; MORPHOGENESIS; DUMBBELLS; MN(OH)(2); ROUTE;
D O I：
10.1016/j.materresbull.2011.07.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
MnCO3 with hierarchical superstructures such as chrysanthemum, straw-bundle, dumbbell and sphere-like were synthesized in water/ethanol system under environment-friendly hydrothermal condition. In the synthesis process, the CO2 in atmosphere was used as the source of carbonate ions and Schiff base was used as shape guiding-agent. The different superstructures of MnCO3 could be obtained by controlling the hydrothermal temperature, the molar ratio of manganous ions to the Schiff base, or the volume ratio of Water to ethanol. A tentative growth mechanism for the generation of MnCO3 superstructures was proposed based on the rod-dumbbell-sphere model. Furthermore, the MnCO3 as precursor could be further successfully transferred to Mn2O3 microstructure after heating in the atmosphere at 500 degrees C, and the morphology of the Mn2O3 was directly determined by that of the MnCO3 precursor. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1908 / 1915
页数：8
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