Hydrogen evolution from aqueous solution mediated by a heterogenized [NiFe]-hydrogenase model: low pH enables catalysis through enzyme-relevant mechanism. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Angewandte Chemie International Edition Année : 2018

Hydrogen evolution from aqueous solution mediated by a heterogenized [NiFe]-hydrogenase model: low pH enables catalysis through enzyme-relevant mechanism.

Résumé

[NiFe]-hydrogenase enzymes are efficient catalysts for H2 evolution but their synthetic models have not been reported to be active under aqueous conditions, so far. Here we show that a close model of the [NiFe]-hydrogenase active site can work as a very active and stable heterogeneous H2 evolution catalyst under mildly acid aqueous conditions. Entry in catalysis is a NiIFeII complex, with electronic structure analogous to the Ni-L state of the enzyme, corroborating the mechanism modification recently proposed for [NiFe]-hydrogenases.
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Dates et versions

hal-01899549 , version 1 (19-10-2018)

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Md Estak Ahmed, Samir Chattopadhyay, Lianke Wang, Deborah Brazzolotto, Debajyoti Pramanik, et al.. Hydrogen evolution from aqueous solution mediated by a heterogenized [NiFe]-hydrogenase model: low pH enables catalysis through enzyme-relevant mechanism.. Angewandte Chemie International Edition, 2018, 57 (49), pp.16001-16004. ⟨10.1002/anie.201808215⟩. ⟨hal-01899549⟩
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