Formation of Rectangularly Shaped Pd/Au Bimetallic Nanorods: Evidence for Competing Growth of the Pd Shell between the {110} and {100} Side Facets of Au Nanorods

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• 作者：Yanjuan Xiang ; Xiaochun Wu ; Dongfang Liu ; Xingyu Jiang ; Weiguo Chu ; Zhiyuan Li ; Yuan Ma ; Weiya Zhou ; Sishen Xie
• 刊名：Nano Letters
• 出版年：2006
• 出版时间：October 2006
• 年：2006
• 卷：6
• 期：10
• 页码：2290 - 2294
• 全文大小：352K
• 年卷期：v.6,no.10(October 2006)
• ISSN：1530-6992

文摘

In this letter, we report the competing growth of a Pd shell on the {110} and {100} facets of Au nanorods (Au NRs). This results in thedisappearance of unstable {110} facets and the formation of rectangularly shaped Pd/Au bimetallic nanorods that show only four stable{100} side surfaces. The energy minimization to a more stable morphology is believed to be the driving force for the formation of the rectangularshape of the Pd shell.