High Symmetric 18-Facet Polyhedron Nanocrystals of Cu7S4 with a Hollow Nanocage

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• 作者：Hongliang Cao ; Xuefeng Qian ; Cheng Wang ; Xiaodong Ma ; Jie Yin ; and Zikang Zhu
• 刊名：Journal of the American Chemical Society
• 出版年：2005
• 出版时间：November 23, 2005
• 年：2005
• 卷：127
• 期：46
• 页码：16024 - 16025
• 全文大小：114K
• 年卷期：v.127,no.46(November 23, 2005)
• ISSN：1520-5126

文摘

On the basis of Kirkendall Effect, high symmetric 18-facet polyhedral nanocrystals of Cu₇S₄ with a hollow nanocage could be converted from cubic nanocrystals of Cu₂O in an aqueous media. The presence of organic additives makes the surface energy of {110} smaller than those of {100} and {111}. The growth of nanocrystals along the normal direction of highest energy surface {100} leads to the formation of a 18-facet polyhedron.