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Design of Catalytically Active Cylindrical and Macroporous Gold Microelectrodes

Authors

  • Stéphane Reculusa,

    1. Centre de Recherche Paul Pascal, CNRS UPR8641, University of Bordeaux, Avenue Albert Schweitzer, 33600 Pessac, France
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  • Matthias Heim,

    1. Institut des Sciences Moléculaires, Groupe NanoSystèmes Analytiques, CNRS UMR5255, University of Bordeaux, ENSCBP, 16 Avenue Pey Berland, 33607 Pessac, France
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  • Feng Gao,

    1. Centre de Recherche Paul Pascal, CNRS UPR8641, University of Bordeaux, Avenue Albert Schweitzer, 33600 Pessac, France
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  • Nicolas Mano,

    1. Centre de Recherche Paul Pascal, CNRS UPR8641, University of Bordeaux, Avenue Albert Schweitzer, 33600 Pessac, France
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  • Serge Ravaine,

    Corresponding author
    1. Centre de Recherche Paul Pascal, CNRS UPR8641, University of Bordeaux, Avenue Albert Schweitzer, 33600 Pessac, France
    • Centre de Recherche Paul Pascal, CNRS UPR8641, University of Bordeaux, Avenue Albert Schweitzer, 33600 Pessac, France
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  • Alexander Kuhn

    Corresponding author
    1. Institut des Sciences Moléculaires, Groupe NanoSystèmes Analytiques, CNRS UMR5255, University of Bordeaux, ENSCBP, 16 Avenue Pey Berland, 33607 Pessac, France
    • Institut des Sciences Moléculaires, Groupe NanoSystèmes Analytiques, CNRS UMR5255, University of Bordeaux, ENSCBP, 16 Avenue Pey Berland, 33607 Pessac, France.
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Abstract

Porous gold structures with a well-defined pore size and thickness are obtained through electrochemical deposition of gold in a colloidal crystal template synthesized by the Langmuir–Blodgett (LB) technique. Cylindrical gold wires were used as substrates for the LB deposition of successive monolayers of silica particles of various sizes, and the electrodeposition of gold through this inorganic template led to a homogeneous, porous metal structure. These materials were characterized through typical electrochemical experiments and showed high surface-to-volume ratios with promising features for their further use in miniaturized electrocatalytic devices.

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