Electrocatalytic Synergy on Nanoparticulate Films Prepared from Oppositely Charged Pt and Au Nanoparticles

Authors

  • Joanna Dolinska,

    1. Institute of Physical Chemistry, Polish Academy of Sciences ul. Kasprzaka 44/52, 01-224 Warszawa (Poland), Fax: +48 22 343 3333
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  • Dr. Palanisamy Kannan,

    1. Institute of Physical Chemistry, Polish Academy of Sciences ul. Kasprzaka 44/52, 01-224 Warszawa (Poland), Fax: +48 22 343 3333
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  • Dr. Volodymyr Sashuk,

    1. Institute of Physical Chemistry, Polish Academy of Sciences ul. Kasprzaka 44/52, 01-224 Warszawa (Poland), Fax: +48 22 343 3333
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  • Dr. Martin Jonsson-Niedziolka,

    1. Institute of Physical Chemistry, Polish Academy of Sciences ul. Kasprzaka 44/52, 01-224 Warszawa (Poland), Fax: +48 22 343 3333
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  • Dr. Zbigniew Kaszkur,

    1. Institute of Physical Chemistry, Polish Academy of Sciences ul. Kasprzaka 44/52, 01-224 Warszawa (Poland), Fax: +48 22 343 3333
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  • Dr. Wojciech Lisowski,

    1. Institute of Physical Chemistry, Polish Academy of Sciences ul. Kasprzaka 44/52, 01-224 Warszawa (Poland), Fax: +48 22 343 3333
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  • Prof. Dr. Marcin Opallo

    Corresponding author
    1. Institute of Physical Chemistry, Polish Academy of Sciences ul. Kasprzaka 44/52, 01-224 Warszawa (Poland), Fax: +48 22 343 3333
    • Institute of Physical Chemistry, Polish Academy of Sciences ul. Kasprzaka 44/52, 01-224 Warszawa (Poland), Fax: +48 22 343 3333===

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Abstract

Electrodes modified with oppositely charged platinum and gold nanoparticles exhibit electrocatalytic synergy of glucose oxidation. Such a simple method of preparation of bimetallic nanoparticulate films produces an electrode with significant shift of the onset potential as compared to electrodes prepared only from platinum (ca. 0.45 V) or gold (ca. 0.6 V) nanoparticles. The observed effect results from close proximity of the Au and Pt nanoparticles surfaces within the film. The electrode was also characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, powder X-ray diffraction measurements and cyclic voltammetry.

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