Electrocatalytic H2evolution promoted by a bioinspired (N2S2)Ni(ii) complex

Soumalya Sinha; Giang N. Tran; Hanah Na; Liviu M. Mirica

doi:10.1039/d1cc05139c

Electrocatalytic H₂evolution promoted by a bioinspired (N2S2)Ni(ii) complex

Soumalya Sinha, Giang N. Tran, Hanah Na, Liviu M. Mirica

Research output: Contribution to journal › Article › peer-review

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.

Original language	English (US)
Pages (from-to)	1143-1146
Number of pages	4
Journal	Chemical Communications
Volume	58
Issue number	8
DOIs	https://doi.org/10.1039/d1cc05139c
State	Published - Jan 25 2022

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Chemistry
Ceramics and Composites
Metals and Alloys
Materials Chemistry
Surfaces, Coatings and Films
Catalysis

Online availability

10.1039/d1cc05139c

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Cite this

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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.",

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