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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, 20131004

    Authors: Kulveer Singh 1 2, Trevor McArdle 2, Patricia R. Sullivan 1 and Christopher F. Blanford 2*

    Last authors: Christopher F. Blanford

    Organizations: 1 Inorganic Chemistry Laboratory, Department of Chemistry, South Parks Road, Oxford, UK 2 School of Materials and Manchester Institute of Biotechnology, 131 Princess Street, Manchester, UK

    Country: England, UK, 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)