Selective synthesis of cobalt hydroxide carbonate 3D architectures and their thermal conversion to cobalt spinel 3D superstructures

被引：136

作者：

Li, Benxia ^{[1
]}

Xie, Yi ^{[1
]}

Wu, Changzheng ^{[1
]}

Li, Zhengquan ^{[1
]}

Zhang, Jin ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2006年 / 99卷 / 2-3期

基金：

中国国家自然科学基金;

关键词：

cobalt hydroxide carbonate; 3D architectures; superstructures; cobalt spinel;

D O I：

10.1016/j.matchemphys.2005.11.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Highly uniform 3D sisal-like, dandelion-like and rose-like architectures of cobalt hydroxide carbonate with orthorhombic or monoclinic phase were synthesized through a facile selected-control hydrothermal process at 100, 140 and 180 degrees C, respectively. In addition, cobalt spinel Co3O4 superstructures with broom-like, dandelion-like and rose-like morphologies were obtained by thermal conversion of the corresponding precursor of 3D architectures based on the thermal analysis results, and TEM images show that all Co3O4 superstructures were assembled by nanoparticles. The optical absorption properties of the Co3O4 Superstructures were investigated and the results indicate that the superstructures are semiconducting with transitions corresponding to 775 and 530 nm in the UV-vis spectroscopy. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：479 / 486

页数：8

共 38 条

[1] Optical recognition of CO and H-2 by use of gas-sensitive Au-Co3O4 composite films [J].