Fabrication of Co₃O₄ cubic nanoframes: Facet-preferential chemical etching of Fe³⁺ ions to Co₃O₄ nanocubes

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• 作者：Mutong Niu ; Yuansheng Wang ; Yao Cheng ; Guoxin Chen ; Lifeng Cui
• 关键词：Co₃O₄ ; Nanoframe ; Chemical etching ; Structural evolution
• 刊名：Materials Letters
• 出版年：2009
• 出版时间：30 April 2009
• 年：2009
• 卷：63
• 期：11
• 页码：837-839
• 全文大小：301 K

文摘

The novel Co₃O₄ cubic nanoframes, sized in ca. 30 nm, were firstly fabricated via a facile solvothermal route. Based on the transmission electron microscopy and the powder X-ray diffraction analyses of the time-dependent products, a mechanism of facet-preferential chemical etching of Fe³⁺ ions to the pre-synthesized Co₃O₄ nanocubes is proposed for the formation of Co₃O₄ cubic nanoframes. This synthetic strategy can probably be extended to fabricate nanoframes of some other binary metal oxides, by designing similar chemical etching process.