Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)

Blaskievicz, Sirlon F.; Teixeira, Ivo F.; Mascaro, Lucia H.; Carta, Mariolino; McKeown, Neil B.; Zhao, Yuanzhu; Marken, Frank

doi:10.1007/s12678-023-00852-9

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Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)

Sirlon F. Blaskievicz, Ivo F. Teixeira, Lucia H. Mascaro, Mariolino Carta

, Neil B. McKeown, Yuanzhu Zhao, Frank Marken

Electrocatalysis, Volume: 15, Issue: 1, Pages: 42 - 51

Swansea University Author: Mariolino Carta

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DOI (Published version): 10.1007/s12678-023-00852-9

Abstract

Polymeric carbon nitrides (C3N4) are photochemically active organic semiconductors that can be produced in a wide range of structural types. Here, a poly-(heptazine imide) containing nickel single atoms (Ni-PHI) is employed for photochemical hydrogen production and is compared to the non-nickel-dope...

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Published in:	Electrocatalysis
ISSN:	1868-2529 1868-5994
Published:	Springer Science and Business Media LLC 2024
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URI:	https://cronfa.swan.ac.uk/Record/cronfa65057
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spelling	v2 65057 2023-11-21 Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides) 56aebf2bba457f395149bbecbfa6d3eb 0000-0003-0718-6971 Mariolino Carta Mariolino Carta true false 2023-11-21 CHEM Polymeric carbon nitrides (C3N4) are photochemically active organic semiconductors that can be produced in a wide range of structural types. Here, a poly-(heptazine imide) containing nickel single atoms (Ni-PHI) is employed for photochemical hydrogen production and is compared to the non-nickel-doped semiconductor. Film deposits are formed on a platinum disk electrode (to detect hydrogen) and a coating of the molecularly rigid polymer of intrinsic microporosity PIM-1 is applied to (i) mechanically stabilize the photo-catalyst film without impeding photocatalysis and (ii) assist in the interfacial hydrogen capture/oxygen suppression process. In the presence of hole quenchers such as methanol or ethanol, anodic photocurrents linked to hydrogen production/oxidation are observed. A comparison with an experiment on glassy carbon confirms the formation of interfacial hydrogen as a mediator. The effects of hole quencher concentration are evaluated. The system Pt/Ni-PHI/PIM-1 is employed in a single-compartment photo-fuel cell. Journal Article Electrocatalysis 15 1 42 51 Springer Science and Business Media LLC 1868-2529 1868-5994 Biomass; Photofuel cell; Photocatalysis; Hydrogen; Intrinsic Microporosity 1 1 2024 2024-01-01 10.1007/s12678-023-00852-9 COLLEGE NANME Chemistry COLLEGE CODE CHEM Swansea University Other S.F.B. thanks to the financial support of the CAPES Foundation for a sandwich doctorate scholarship (CAPES-PRINT Process 88887.465542/2019-00). L.H.M. thanks to FAPESP (2017/11986-5, 2020/14741-6, 2014/50249-8). Y.Z. (201809350006) is grateful to the China Scholarship Council for a PhD scholarship. 2024-03-08T13:43:53.0534794 2023-11-21T11:19:56.6330026 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Sirlon F. Blaskievicz 1 Ivo F. Teixeira 2 Lucia H. Mascaro 3 Mariolino Carta 0000-0003-0718-6971 4 Neil B. McKeown 5 Yuanzhu Zhao 6 Frank Marken 7 65057__29069__3fb2a015a3184317890f4d069fb75b39.pdf 65057.pdf 2023-11-21T11:22:29.5521397 Output 1884316 application/pdf Version of Record true © The Author(s) 2023. This article is licensed under a Creative Commons Attribution 4.0 International License true eng https://creativecommons.org/licenses/by/4.0/
title	Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)
spellingShingle	Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides) Mariolino Carta
title_short	Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)
title_full	Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)
title_fullStr	Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)
title_full_unstemmed	Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)
title_sort	Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)
author_id_str_mv	56aebf2bba457f395149bbecbfa6d3eb
author_id_fullname_str_mv	56aebf2bba457f395149bbecbfa6d3eb_***_Mariolino Carta
author	Mariolino Carta
author2	Sirlon F. Blaskievicz Ivo F. Teixeira Lucia H. Mascaro Mariolino Carta Neil B. McKeown Yuanzhu Zhao Frank Marken
format	Journal article
container_title	Electrocatalysis
container_volume	15
container_issue	1
container_start_page	42
publishDate	2024
institution	Swansea University
issn	1868-2529 1868-5994
doi_str_mv	10.1007/s12678-023-00852-9
publisher	Springer Science and Business Media LLC
college_str	Faculty of Science and Engineering
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description	Polymeric carbon nitrides (C3N4) are photochemically active organic semiconductors that can be produced in a wide range of structural types. Here, a poly-(heptazine imide) containing nickel single atoms (Ni-PHI) is employed for photochemical hydrogen production and is compared to the non-nickel-doped semiconductor. Film deposits are formed on a platinum disk electrode (to detect hydrogen) and a coating of the molecularly rigid polymer of intrinsic microporosity PIM-1 is applied to (i) mechanically stabilize the photo-catalyst film without impeding photocatalysis and (ii) assist in the interfacial hydrogen capture/oxygen suppression process. In the presence of hole quenchers such as methanol or ethanol, anodic photocurrents linked to hydrogen production/oxidation are observed. A comparison with an experiment on glassy carbon confirms the formation of interfacial hydrogen as a mediator. The effects of hole quencher concentration are evaluated. The system Pt/Ni-PHI/PIM-1 is employed in a single-compartment photo-fuel cell.
published_date	2024-01-01T13:43:49Z
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Hydrogen-Mediated Photoelectrocatalysis with Nickel-Modified Poly(Heptazine Imides)

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