title: Cobalt hydroxide nanosheets and their thermal decomposition to cobalt oxide nanorings.
abstract: 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.
authors.affiliation: Department of Inorganic Materials, Central South University, Changsha, Hunan 410083, China.
authors.forename: Xiaohe
authors.initials: X
authors.lastname: Liu
authors.forename: Ran
authors.initials: R
authors.lastname: Yi
authors.forename: Ning
authors.initials: N
authors.lastname: Zhang
authors.forename: Rongrong
authors.initials: R
authors.lastname: Shi
authors.forename: Xingguo
authors.initials: X
authors.lastname: Li
authors.forename: Guanzhou
authors.initials: G
authors.lastname: Qiu
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D006358:Hot Temperature; D006878:Hydroxides / Q000737:chemistry*; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry*
chemical_list: D006878:Hydroxides; D010087:Oxides; C518276:cobalt hydroxide; D003035:Cobalt; C060728:cobalt oxide