Rodríguez‐Maciá, Patricia;
Birrell, James A.;
Lubitz, Wolfgang;
Rüdiger, Olaf
Electrochemical Investigations on the Inactivation of the [FeFe] Hydrogenase from Desulfovibrio desulfuricans by O2 or Light under Hydrogen‐Producing Conditions
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Medientyp:
E-Artikel
Titel:
Electrochemical Investigations on the Inactivation of the [FeFe] Hydrogenase from Desulfovibrio desulfuricans by O2 or Light under Hydrogen‐Producing Conditions
Beteiligte:
Rodríguez‐Maciá, Patricia;
Birrell, James A.;
Lubitz, Wolfgang;
Rüdiger, Olaf
Erschienen:
Wiley, 2017
Erschienen in:ChemPlusChem
Sprache:
Englisch
DOI:
10.1002/cplu.201600508
ISSN:
2192-6506
Entstehung:
Anmerkungen:
Beschreibung:
<jats:title>Abstract</jats:title><jats:p>The applicability of the extremely active [FeFe] hydrogenase from <jats:italic>Desulfovibrio desulfuricans</jats:italic> in H<jats:sub>2</jats:sub>‐producing devices is studied. Despite being the most active enzyme for H<jats:sub>2</jats:sub> catalysis, its high sensitivity towards O<jats:sub>2</jats:sub> has prevented its use in electrolytic water splitting cells. Using electrochemical methods, the catalytic activity of the enzyme at H<jats:sub>2</jats:sub>‐producing potentials and its inactivation upon exposure to limited amounts of O<jats:sub>2</jats:sub> or under illumination is analysed. This enzyme is shown to maintain H<jats:sub>2</jats:sub> production activity for extended periods of time at low potentials. At such potentials, the enzyme can deliver the required electrons to fully reduce O<jats:sub>2</jats:sub> to H<jats:sub>2</jats:sub>O, minimising the damage of the enzyme. Additionally, the robustness of this enzyme under illumination at negative applied potentials is demonstrated. These results show that the [FeFe] hydrogenase from <jats:italic>D. desulfuricans</jats:italic> is an excellent candidate to be used in devices to store solar energy in hydrogen.</jats:p>