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Proton reduction by a bimetallic zinc selenolate electrocatalyst

The development of alternative energy sources is the utmost priority of developing society. Unlike many prior homogeneous electrocatalysts that rely on a change in the oxidation state of the metal center and/or electrochemically active ligand, here we report the synthesis and structural characteriza...

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Autores principales: Upadhyay, Aditya, Saurav, K. V., Varghese, Evelin Lilly, Hodage, Ananda S., Paul, Amit, Awasthi, Mahendra Kumar, Singh, Sanjay Kumar, Kumar, Sangit
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8981091/
https://www.ncbi.nlm.nih.gov/pubmed/35425408
http://dx.doi.org/10.1039/d1ra08614f
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author Upadhyay, Aditya
Saurav, K. V.
Varghese, Evelin Lilly
Hodage, Ananda S.
Paul, Amit
Awasthi, Mahendra Kumar
Singh, Sanjay Kumar
Kumar, Sangit
author_facet Upadhyay, Aditya
Saurav, K. V.
Varghese, Evelin Lilly
Hodage, Ananda S.
Paul, Amit
Awasthi, Mahendra Kumar
Singh, Sanjay Kumar
Kumar, Sangit
author_sort Upadhyay, Aditya
collection PubMed
description The development of alternative energy sources is the utmost priority of developing society. Unlike many prior homogeneous electrocatalysts that rely on a change in the oxidation state of the metal center and/or electrochemically active ligand, here we report the synthesis and structural characterization of a bimetallic zinc selenolate complex consisting of a redox silent zinc metal ion and a tridentate ligand that catalyzes the reduction of protons into hydrogen gas electrochemically and displays one of the highest reported TOF for a homogeneous TM-metal free ligand centered HER catalyst, 509 s(−1). The current–voltage analysis confirms the onset overpotential of 0.86 V vs. Ag/AgCl for the HER process. Constant potential electrolysis (CPE) has been carried out to study the bulk electrolysis of our developed protocol, which reveals that the bimetallic zinc selenolate catalyst is stable under cathodic as well as anodic potentials and generates hydrogen gas with a faradaic efficiency of 75%. Preliminary studies on the heterogeneous catalyst were conducted by depositing the bimetallic zinc selenolate catalyst on the electrode surface.
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spelling pubmed-89810912022-04-13 Proton reduction by a bimetallic zinc selenolate electrocatalyst Upadhyay, Aditya Saurav, K. V. Varghese, Evelin Lilly Hodage, Ananda S. Paul, Amit Awasthi, Mahendra Kumar Singh, Sanjay Kumar Kumar, Sangit RSC Adv Chemistry The development of alternative energy sources is the utmost priority of developing society. Unlike many prior homogeneous electrocatalysts that rely on a change in the oxidation state of the metal center and/or electrochemically active ligand, here we report the synthesis and structural characterization of a bimetallic zinc selenolate complex consisting of a redox silent zinc metal ion and a tridentate ligand that catalyzes the reduction of protons into hydrogen gas electrochemically and displays one of the highest reported TOF for a homogeneous TM-metal free ligand centered HER catalyst, 509 s(−1). The current–voltage analysis confirms the onset overpotential of 0.86 V vs. Ag/AgCl for the HER process. Constant potential electrolysis (CPE) has been carried out to study the bulk electrolysis of our developed protocol, which reveals that the bimetallic zinc selenolate catalyst is stable under cathodic as well as anodic potentials and generates hydrogen gas with a faradaic efficiency of 75%. Preliminary studies on the heterogeneous catalyst were conducted by depositing the bimetallic zinc selenolate catalyst on the electrode surface. The Royal Society of Chemistry 2022-01-31 /pmc/articles/PMC8981091/ /pubmed/35425408 http://dx.doi.org/10.1039/d1ra08614f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Upadhyay, Aditya
Saurav, K. V.
Varghese, Evelin Lilly
Hodage, Ananda S.
Paul, Amit
Awasthi, Mahendra Kumar
Singh, Sanjay Kumar
Kumar, Sangit
Proton reduction by a bimetallic zinc selenolate electrocatalyst
title Proton reduction by a bimetallic zinc selenolate electrocatalyst
title_full Proton reduction by a bimetallic zinc selenolate electrocatalyst
title_fullStr Proton reduction by a bimetallic zinc selenolate electrocatalyst
title_full_unstemmed Proton reduction by a bimetallic zinc selenolate electrocatalyst
title_short Proton reduction by a bimetallic zinc selenolate electrocatalyst
title_sort proton reduction by a bimetallic zinc selenolate electrocatalyst
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8981091/
https://www.ncbi.nlm.nih.gov/pubmed/35425408
http://dx.doi.org/10.1039/d1ra08614f
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