Formation of mediated biocatalytic cathodes by electrodeposition of a redox polymer and laccase

Nicholas S. Hudak, Joshua W. Gallaway, Scott Calabrese Barton

    Research output: Contribution to journalArticle

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    Abstract

    Mediated biocatalytic cathodes were fabricated via electrodeposition of an osmium-based redox polymer onto planar and porous electrode surfaces, incorporating the oxygen-reducing enzyme laccase. After one hour of electrodeposition time, bio-cathodes on glassy carbon substrate exhibited redox site loading of 6 nmol cm-2 and oxygen reduction current density of 1.4 mA cm-2. Those on carbon-fiber paper exhibited redox site loading of 46 nmol cm-2 and oxygen reduction current density of 15.7 mA cm-2. The current density and polarization behavior were comparable to those of bio-cathodes made by conventional chemical crosslinking. The specific activity in terms of current per mole of redox polymer or enzyme was significantly higher for electrodeposited films.

    Original languageEnglish (US)
    Pages (from-to)57-62
    Number of pages6
    JournalJournal of Electroanalytical Chemistry
    Volume629
    Issue number1-2
    DOIs
    StatePublished - Apr 15 2009

    Profile

    Oxidation-Reduction
    Cathodes
    Coumestrol
    Electrodeposition
    Current density
    Oxygen
    Polymers
    Contraceptives, Oral, Combined
    Enzymes
    Osmium
    Glassy carbon
    Crosslinking
    Carbon fibers
    Polarization
    Electrodes
    Substrates
    Edema Disease of Swine
    Equilenin
    Alcuronium
    Spinal Cord Compression

    Keywords

    • Bioelectrocatalysis
    • Electrodeposition
    • Enzyme electrode
    • Laccase
    • Mediator
    • Redox polymer

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Analytical Chemistry
    • Electrochemistry

    Cite this

    Formation of mediated biocatalytic cathodes by electrodeposition of a redox polymer and laccase. / Hudak, Nicholas S.; Gallaway, Joshua W.; Barton, Scott Calabrese.

    In: Journal of Electroanalytical Chemistry, Vol. 629, No. 1-2, 15.04.2009, p. 57-62.

    Research output: Contribution to journalArticle

    Hudak, Nicholas S.; Gallaway, Joshua W.; Barton, Scott Calabrese / Formation of mediated biocatalytic cathodes by electrodeposition of a redox polymer and laccase.

    In: Journal of Electroanalytical Chemistry, Vol. 629, No. 1-2, 15.04.2009, p. 57-62.

    Research output: Contribution to journalArticle

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