학술논문
Electrocatalytic H2 evolution promoted by a bioinspired (N2S2)Ni(II) complex.
Document Type
Article
Source
Subject
*HYDROGENASE
*ELECTROCATALYSTS
*CYSTEINE
*PROTONS
*ACIDS
*HYDROGEN evolution reactions
*
*
*
*
*
Language
ISSN
1359-7345
Abstract
A bioinspired (N2S2)Ni(II) electrocatalyst is reported that produces H2 from CF3CO2H with a turnover frequency (TOF) of ∼1250 s−1 at low acid concentration (<0.043 M) in MeCN. A mechanism for the H2 production by this electrocatalyst is proposed and its activity is benchmarked against those of other reported molecular Ni H2 evolution electrocatalysts. The involvement of a hemilabile pyridyl group of the N2S2 ligand is proposed to mimic the role of a cysteine residue involved in the biological proton reduction performed by [NiFe] hydrogenases. [ABSTRACT FROM AUTHOR]