Cobalt Hydroxide Nanosheets and Their Thermal Decomposition to Cobalt Oxide Nanorings |
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| Authors: | Xiaohe Liu Dr. Ran Yi Ning Zhang Rongrong Shi Xingguo Li Prof. Dr. Guanzhou Qiu Prof. Dr. |
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| Affiliation: | 1. Department of Inorganic Materials, Central South University, Changsha, Hunan 410083, China, Fax: (+86)?731‐8879815;2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China |
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| Abstract: | We demonstrate herein that single‐crystalline β‐cobalt hydroxide (β‐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 β‐Co(OH)2 nanosheets owing to its high yield, low cost, and simple reaction apparatus. Single‐crystalline porous nanosheets and nanorings of cobalt oxide (Co3O4) were obtained by a thermal‐decomposition method with single‐crystalline β‐Co(OH)2 nanosheets as the precursor. A probable mechanism of formation of β‐Co(OH)2 nanosheets, porous Co3O4 nanosheets, and Co3O4 nanorings was proposed on the basis of the experimental results. |
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| Keywords: | cobalt hydrothermal synthesis nanorings nanosheets nanostructures |
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