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          Institute: MPI für bioanorganische Chemie     Collection: MPI für bioanorganische Chemie     Display Documents



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ID: 733996.0, MPI für bioanorganische Chemie / MPI für bioanorganische Chemie
Electrochemical Investigations on the Inactivation of the [FeFe] Hydrogenase from Desulfovibrio desulfuricans by O2 or Light under Hydrogen-Producing Conditions
Authors:Rodriguez-Macia, Patricia; Birrell, James A.; Lubitz, Wolfgang; Rüdiger, Olaf
Language:English
Date of Publication (YYYY-MM-DD):2017
Title of Journal:ChemPlusChem
Journal Abbrev.:Chem.Plus.Chem.
Volume:82
Issue / Number:4 Sp. Iss. SI
Start Page:540
End Page:545
Review Status:Internal review
Audience:Experts Only
Abstract / Description:The applicability of the extremely active [FeFe] hydrogenase from Desulfovibrio desulfuricans in H-2-producing devices is studied. Despite being the most active enzyme for H-2 catalysis, its high sensitivity towards O-2 has prevented its use in electrolytic water splitting cells. Using electrochemical methods, the catalytic activity of the enzyme at H-2-producing potentials and its inactivation upon exposure to limited amounts of O-2 or under illumination is analysed. This enzyme is shown to maintain H-2 production activity for extended periods of time at low potentials. At such potentials, the enzyme can deliver the required electrons to fully reduce O-2 to H2O, 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 D. desulfuricans is an excellent candidate to be used in devices to store solar energy in hydrogen.
Comment of the Author/Creator:Date: 2017, APR 2017
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für bioanorganische Chemie
Identifiers:ISI:000400603500004 [ID No:1]
ISSN:2192-6506 [ID No:2]
DOI:10.1002/cplu.v82.4 [ID No:3]
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