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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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journal contribution
posted on 11.10.2006, 00:00 by Yanjuan Xiang, Xiaochun Wu, Dongfang Liu, Xingyu Jiang, Weiguo Chu, Zhiyuan Li, Yuan Ma, Weiya Zhou, Sishen Xie
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 the disappearance 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 rectangular shape of the Pd shell.