Cobalt Hydroxide Nanosheets and Their Thermal Decomposition to Cobalt Oxide Nanorings
2008; Wiley; Volume: 3; Issue: 4 Linguagem: Inglês
10.1002/asia.200700264
ISSN1861-4728
AutoresXiaohe Liu, Ran Yi, Ning Zhang, Rongrong Shi, Xingguo Li, Guanzhou Qiu,
Tópico(s)Transition Metal Oxide Nanomaterials
ResumoAbstract 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 (Co 3 O 4 ) 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 Co 3 O 4 nanosheets, and Co 3 O 4 nanorings was proposed on the basis of the experimental results.
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