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Bioelectrochemical Oxidation of Water

AuthorsPita, Marcos ; Maté, Diana M. ; González-Pérez, David ; Shleev, Sergey; Fernández López, Víctor Manuel ; Alcalde Galeote, Miguel ; López de Lacey, Antonio
Issue DateSep-2014
Citation65th Annual Meeting of the International Society of Electrochemistry (2014)
AbstractThe electrolysis of water provides a link between electrical energy and hydrogen, a high energy density fuel and a versatile energy carrier, but the process is very expensive. Indeed, the main challenge is to reduce energy consumption for large-scale applications using efficient renewable catalysts, which can be produced at low cost. Inspired by the water oxidation process catalyzed by inorganic Cu-complexes, we present the multicopper oxidase laccase as the first ever enzyme reported able to catalyze electrooxidation of H2O to molecular oxygen. Native and laboratory evolved laccases immobilized onto low-density graphite electrodes serve as bioelectrocatalytic systems with low overpotential and a high O2 evolution ratio against H2O2 production during H2O electrolysis. Our results open a new research ground on H2O splitting as they allow overcoming serious practical limitations associated with artificial electrocatalysts used for O2 evolution nowadays.
DescriptionTrabajo presentado en la 65th Annual Meeting of the International Society of Electrochemistry (ISE), celebrada en Lausanne del 31 de agosto al 5 de septiembre de 2017.
Appears in Collections:(ICP) Comunicaciones congresos
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