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    Sources of activity loss in the fuel cell enzyme bilirubin oxidase

    Year: 2013

    Journal: Energy Environ. Sci., 2013,6, 2460-2464, 20130801

    Authors: Kulveer Singh a,b, Trevor McArdle b, Patricia R. Sullivan a and Christopher F. Blanford *b

    Last authors: Christopher F. Blanford

    Organizations: *Corresponding authors a Inorganic Chemistry Laboratory, Department of Chemistry, South Parks Road, Oxford, UK b School of Materials and Manchester Institute of Biotechnology, 131 Princess Street, Manchester, UK

    Country: UK, England, Great Britain, United Kingdom

    Electrochemical quartz crystal microbalance measurements with energy dissipation monitoring (E-QCM-D) show that the catalytic lifetime of the O2-reducing multicopper oxidase bilirubin oxidase from Myrothecium verrucaria, adsorbed on or covalently attached to a organothiol-modified gold electrode, is shortened from days to hours when the applied potential is cycled to below a critical potential (0.6 V vs. SHE at pH 6.0).