Photoelectrochemical Hydrogen Production by a Cobalt Tetrapyridyl Catalyst Using Push–Pull Dye‐Sensitized NiO Photocathodes

Herein, the synthesis and optoelectronic properties of a novel push–pull organic dye, pRK1, specifically designed for use in dye‐sensitized photocathodes for hydrogen generation, are reported. The chemical structure of this dye, which incorporates a benzothiadiazole moiety, is inspired by RK1, a dye...

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Main Authors: Claire Bourguignon, Anthonin Moinel, Aurélien Huet, Yann Kervella, Christopher D. Windle, Julien Massin, Vincent Artero, Murielle Chavarot-Kerlidou, Renaud Demadrille
Format: Article
Language:English
Published: Wiley-VCH 2023-12-01
Series:Advanced Energy & Sustainability Research
Subjects:
Online Access:https://doi.org/10.1002/aesr.202300095
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author Claire Bourguignon
Anthonin Moinel
Aurélien Huet
Yann Kervella
Christopher D. Windle
Julien Massin
Vincent Artero
Murielle Chavarot-Kerlidou
Renaud Demadrille
author_facet Claire Bourguignon
Anthonin Moinel
Aurélien Huet
Yann Kervella
Christopher D. Windle
Julien Massin
Vincent Artero
Murielle Chavarot-Kerlidou
Renaud Demadrille
author_sort Claire Bourguignon
collection DOAJ
description Herein, the synthesis and optoelectronic properties of a novel push–pull organic dye, pRK1, specifically designed for use in dye‐sensitized photocathodes for hydrogen generation, are reported. The chemical structure of this dye, which incorporates a benzothiadiazole moiety, is inspired by RK1, a dye previously reported as a photosensitizer in n‐type dye‐sensitized solar cells (DSSCs) with power conversion efficiencies above 10% and high stability. The photoelectrochemical activity for hydrogen evolution of pRK1 after grafting onto NiO photocathodes in combination with a cobalt tetrapyridyl catalyst [Co(bapbpy)(OH2)2](BF4)2 in aqueous solution is evaluated and compared with two reference dyes from the literature, RuP2‐bpy and P1. It is shown that among the three photocathodes studied in this work, NiO|pRK1 is the most efficient, producing up to 1.9 μmol cm−2 of hydrogen with a faradaic efficiency of 66%, under visible light irradiation in aqueous electrolyte at pH 4.5. pRK1 shows a turnover number (TONdye) of up to 145 during the 6 h chronoamperometric test, almost twice that of P1. This study demonstrates that the chemical structure of high performance dyes commonly used in DSSCs can be successfully modified to meet the requirements for light‐driven water splitting in dye‐sensitized photoelectrochemical cells.
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spelling doaj.art-46773518034741df8f221aa45ebcb2d52023-12-08T03:59:29ZengWiley-VCHAdvanced Energy & Sustainability Research2699-94122023-12-01412n/an/a10.1002/aesr.202300095Photoelectrochemical Hydrogen Production by a Cobalt Tetrapyridyl Catalyst Using Push–Pull Dye‐Sensitized NiO PhotocathodesClaire Bourguignon0Anthonin Moinel1Aurélien Huet2Yann Kervella3Christopher D. Windle4Julien Massin5Vincent Artero6Murielle Chavarot-Kerlidou7Renaud Demadrille8Univ Grenoble Alpes, CNRS, CEA, IRIG, SYMMES 17 rue des Martyrs 38000 Grenoble FranceUniv Grenoble Alpes, CNRS, CEA, IRIG, SYMMES 17 rue des Martyrs 38000 Grenoble FranceUniv Grenoble Alpes, CNRS, CEA, IRIG, SYMMES 17 rue des Martyrs 38000 Grenoble FranceUniv Grenoble Alpes, CNRS, CEA, IRIG, SYMMES 17 rue des Martyrs 38000 Grenoble FranceUniv Grenoble Alpes, CNRS, CEA, IRIG, LCBM 17 rue des Martyrs 38000 Grenoble FranceUniv Grenoble Alpes, CNRS, CEA, IRIG, LCBM 17 rue des Martyrs 38000 Grenoble FranceUniv Grenoble Alpes, CNRS, CEA, IRIG, LCBM 17 rue des Martyrs 38000 Grenoble FranceUniv Grenoble Alpes, CNRS, CEA, IRIG, LCBM 17 rue des Martyrs 38000 Grenoble FranceUniv Grenoble Alpes, CNRS, CEA, IRIG, SYMMES 17 rue des Martyrs 38000 Grenoble FranceHerein, the synthesis and optoelectronic properties of a novel push–pull organic dye, pRK1, specifically designed for use in dye‐sensitized photocathodes for hydrogen generation, are reported. The chemical structure of this dye, which incorporates a benzothiadiazole moiety, is inspired by RK1, a dye previously reported as a photosensitizer in n‐type dye‐sensitized solar cells (DSSCs) with power conversion efficiencies above 10% and high stability. The photoelectrochemical activity for hydrogen evolution of pRK1 after grafting onto NiO photocathodes in combination with a cobalt tetrapyridyl catalyst [Co(bapbpy)(OH2)2](BF4)2 in aqueous solution is evaluated and compared with two reference dyes from the literature, RuP2‐bpy and P1. It is shown that among the three photocathodes studied in this work, NiO|pRK1 is the most efficient, producing up to 1.9 μmol cm−2 of hydrogen with a faradaic efficiency of 66%, under visible light irradiation in aqueous electrolyte at pH 4.5. pRK1 shows a turnover number (TONdye) of up to 145 during the 6 h chronoamperometric test, almost twice that of P1. This study demonstrates that the chemical structure of high performance dyes commonly used in DSSCs can be successfully modified to meet the requirements for light‐driven water splitting in dye‐sensitized photoelectrochemical cells.https://doi.org/10.1002/aesr.202300095cobalt catalystsdye-sensitized photocathodeshydrogen productionorganic dyes
spellingShingle Claire Bourguignon
Anthonin Moinel
Aurélien Huet
Yann Kervella
Christopher D. Windle
Julien Massin
Vincent Artero
Murielle Chavarot-Kerlidou
Renaud Demadrille
Photoelectrochemical Hydrogen Production by a Cobalt Tetrapyridyl Catalyst Using Push–Pull Dye‐Sensitized NiO Photocathodes
Advanced Energy & Sustainability Research
cobalt catalysts
dye-sensitized photocathodes
hydrogen production
organic dyes
title Photoelectrochemical Hydrogen Production by a Cobalt Tetrapyridyl Catalyst Using Push–Pull Dye‐Sensitized NiO Photocathodes
title_full Photoelectrochemical Hydrogen Production by a Cobalt Tetrapyridyl Catalyst Using Push–Pull Dye‐Sensitized NiO Photocathodes
title_fullStr Photoelectrochemical Hydrogen Production by a Cobalt Tetrapyridyl Catalyst Using Push–Pull Dye‐Sensitized NiO Photocathodes
title_full_unstemmed Photoelectrochemical Hydrogen Production by a Cobalt Tetrapyridyl Catalyst Using Push–Pull Dye‐Sensitized NiO Photocathodes
title_short Photoelectrochemical Hydrogen Production by a Cobalt Tetrapyridyl Catalyst Using Push–Pull Dye‐Sensitized NiO Photocathodes
title_sort photoelectrochemical hydrogen production by a cobalt tetrapyridyl catalyst using push pull dye sensitized nio photocathodes
topic cobalt catalysts
dye-sensitized photocathodes
hydrogen production
organic dyes
url https://doi.org/10.1002/aesr.202300095
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