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Issue 11, 2012
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Nucleation and growth of metal on nanoelectrodes

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Abstract

Three-dimensional nucleation and growth on active surface sites are fundamentally important initial stages of the electrodeposition of metals. Electrochemical studies of these processes are greatly complicated by the formation of multiple crystals interacting with each other. We investigated Ag electrodeposition on the surface of well-characterized, nanometer-sized Pt electrodes and measured the nucleation/growth kinetics of individual Ag crystals by a combination of nanoelectrochemistry and atomic force microscopy (AFM). Basic parameters, including the number of surface active sites, the kinetic time lag and the number of growing nuclei, were directly accessed from current transients and in situ AFM imaging. The existence of a single nucleation site on the surface of a 50 nm electrode persisting through several deposition/stripping cycles has been demonstrated.

Graphical abstract: Nucleation and growth of metal on nanoelectrodes

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Publication details

The article was received on 18 Jul 2012, accepted on 15 Aug 2012 and first published on 30 Aug 2012


Article type: Edge Article
DOI: 10.1039/C2SC21005C
Citation: Chem. Sci., 2012,3, 3307-3314
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    Nucleation and growth of metal on nanoelectrodes

    J. Velmurugan, J. Noël, W. Nogala and M. V. Mirkin, Chem. Sci., 2012, 3, 3307
    DOI: 10.1039/C2SC21005C

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