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Issue 32, 2016
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An unconventional mechanism of hollow nanorod formation: asymmetric Cu diffusion in Au–Cu alloy nanorods during galvanic replacement reaction

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Abstract

This study investigates how AuCu3 alloy nanorods transform into hollow rods during a galvanic replacement reaction. An unusual reaction intermediate was observed where the solid nanorod became partially hollow and Cu rich at one end. This was attributed to simultaneous galvanic replacement and asymmetric diffusion of Cu due to the Kirkendall effect. The hollow Au–Cu nanorods showed enhanced catalytic activity for p-nitrophenol reduction.

Graphical abstract: An unconventional mechanism of hollow nanorod formation: asymmetric Cu diffusion in Au–Cu alloy nanorods during galvanic replacement reaction

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Supplementary files

Article information


Submitted
25 Jan 2016
Accepted
17 Mar 2016
First published
30 Mar 2016

Chem. Commun., 2016,52, 5593-5596
Article type
Communication

An unconventional mechanism of hollow nanorod formation: asymmetric Cu diffusion in Au–Cu alloy nanorods during galvanic replacement reaction

S. Thota, S. Chen and J. Zhao, Chem. Commun., 2016, 52, 5593 DOI: 10.1039/C6CC00752J

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