Phase- and Size-Controlled Synthesis of Hexagonal and Cubic CoO Nanocrystals

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• 作者：Won Seok Seo ; Jae Ha Shim ; Sang Jun Oh ; Eun Kwang Lee ; Nam Hwi Hur ; and Joon T. Park
• 刊名：Journal of the American Chemical Society
• 出版年：2005
• 出版时间：May 4, 2005
• 年：2005
• 卷：127
• 期：17
• 页码：6188 - 6189
• 全文大小：240K
• 年卷期：v.127,no.17(May 4, 2005)
• ISSN：1520-5126

文摘

Highly crystalline, phase- and size-controlled CoO nanocrystals of hexagonal and cubic phases have been prepared by thermal decomposition of Co(acac)₃ in oleylamine under an inert atmosphere. Kinetic and thermodynamic control for the precursor formation leads to two different seeds of hexagonal and cubic phases at higher temperatures. The crystal size of both CoO phases can be easily manipulated by changing the precursor concentration and reaction temperature.