Cobalt hydroxide nanosheets and their thermal decomposition to cobalt oxide nanorings.
We demonstrate herein that single-crystalline beta-cobalt hydroxide (beta-Co(OH)(2)) nanosheets can be successfully synthesized in large quantities by a facile hydrothermal synthetic method with aqueous cobalt nitrate as the cobalt source and triethylamine as both an alkaline and a complexing reagent. This synthetic method has good prospects for the future large-scale production of single-crystalline beta-Co(OH)(2) nanosheets owing to its high yield, low cost, and simple reaction apparatus. Single-crystalline porous nanosheets and nanorings of cobalt oxide (Co(3)O(4)) were obtained by a thermal-decomposition method with single-crystalline beta-Co(OH)(2) nanosheets as the precursor. A probable mechanism of formation of beta-Co(OH)(2) nanosheets, porous Co(3)O(4) nanosheets, and Co(3)O(4) nanorings was proposed on the basis of the experimental results.
Liu
Xiaohe
X
Department of Inorganic Materials, Central South University, Changsha, Hunan 410083, China.
Yi
Ran
R
Zhang
Ning
N
Shi
Rongrong
R
Li
Xingguo
X
Qiu
Guanzhou
G
D003035:Cobalt / Q000737:chemistry*; D006358:Hot Temperature; D006878:Hydroxides / Q000737:chemistry*; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry*
D006878:Hydroxides; D010087:Oxides; C518276:cobalt hydroxide; D003035:Cobalt; C060728:cobalt oxide