Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis

Autores
Vensaus, Priscila; Liang, Yunchang; Cichelero, Rafael; Dmitriev, Alexandre; Soler Illia, Galo Juan de Avila Arturo; Lingenfelder, Magalí Alejandra
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The efficiency of green hydrogen production via water splitting is typically hindered by the sluggish kinetics of the oxygen evolution reaction (OER). Here we investigate the performance of various nickel nanoclusters, deposited via a binder-free gas-phase method, as OER catalysts on two distinct porous platforms: commercial gas diffusion layers (GDLs) for electrocatalysis and mesoporous thin films for photoelectrocatalysis. For dark electrocatalysis on GDL, we find a non-linear relationship between catalyst loading and activity, where the lowest Ni loadings exhibited the highest specific activity. Trace iron impurities in the electrolyte dramatically enhanced the performance, leading to a 120-fold increase in specific current for the lowest loading samples through the in situ formation of highly active NiFe oxyhydroxide species. When integrated as co-catalysts on mesoporous TiO₂ photoanodes, Ni nanoclusters significantly improved photocurrents, with an optimal loading of 0.27–0.89 μg cm−2. While Fe impurities also boosted photoelectrochemical performance at low Ni coverages, the effect was less pronounced and became detrimental at higher loadings. These findings underscore that the precise control of the catalyst loading and composition is decisive for designing scalable and highly efficient systems for water oxidation.
Fil: Vensaus, Priscila. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. École Polytechnique Fédérale de Lausanne; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Liang, Yunchang. École Polytechnique Fédérale de Lausanne; Suiza
Fil: Cichelero, Rafael. University of Gothenburg; Suecia
Fil: Dmitriev, Alexandre. University of Gothenburg; Suecia
Fil: Soler Illia, Galo Juan de Avila Arturo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina
Fil: Lingenfelder, Magalí Alejandra. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. Helvetia Institute for Science and Innovation; Suiza
Materia
Ni nanoclusters
oxygen evolution catalysts
porous supports
electro- and photocatalysis
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/285550
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysisVensaus, PriscilaLiang, YunchangCichelero, RafaelDmitriev, AlexandreSoler Illia, Galo Juan de Avila ArturoLingenfelder, Magalí AlejandraNi nanoclustersoxygen evolution catalystsporous supportselectro- and photocatalysishttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2The efficiency of green hydrogen production via water splitting is typically hindered by the sluggish kinetics of the oxygen evolution reaction (OER). Here we investigate the performance of various nickel nanoclusters, deposited via a binder-free gas-phase method, as OER catalysts on two distinct porous platforms: commercial gas diffusion layers (GDLs) for electrocatalysis and mesoporous thin films for photoelectrocatalysis. For dark electrocatalysis on GDL, we find a non-linear relationship between catalyst loading and activity, where the lowest Ni loadings exhibited the highest specific activity. Trace iron impurities in the electrolyte dramatically enhanced the performance, leading to a 120-fold increase in specific current for the lowest loading samples through the in situ formation of highly active NiFe oxyhydroxide species. When integrated as co-catalysts on mesoporous TiO₂ photoanodes, Ni nanoclusters significantly improved photocurrents, with an optimal loading of 0.27–0.89 μg cm−2. While Fe impurities also boosted photoelectrochemical performance at low Ni coverages, the effect was less pronounced and became detrimental at higher loadings. These findings underscore that the precise control of the catalyst loading and composition is decisive for designing scalable and highly efficient systems for water oxidation.Fil: Vensaus, Priscila. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. École Polytechnique Fédérale de Lausanne; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Liang, Yunchang. École Polytechnique Fédérale de Lausanne; SuizaFil: Cichelero, Rafael. University of Gothenburg; SueciaFil: Dmitriev, Alexandre. University of Gothenburg; SueciaFil: Soler Illia, Galo Juan de Avila Arturo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martin. Instituto de Nanosistemas; ArgentinaFil: Lingenfelder, Magalí Alejandra. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. Helvetia Institute for Science and Innovation; SuizaIOP Publishing2026-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/285550Vensaus, Priscila; Liang, Yunchang; Cichelero, Rafael; Dmitriev, Alexandre; Soler Illia, Galo Juan de Avila Arturo; et al.; Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis; IOP Publishing; Nanotechnology; 37; 4; 1-2026; 1-120957-4484CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1361-6528/ae3573info:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6528/ae3573info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:40:52Zoai:ri.conicet.gov.ar:11336/285550instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-08-25 14:40:52.852CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis
title Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis
spellingShingle Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis
Vensaus, Priscila
Ni nanoclusters
oxygen evolution catalysts
porous supports
electro- and photocatalysis
title_short Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis
title_full Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis
title_fullStr Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis
title_full_unstemmed Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis
title_sort Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis
dc.creator.none.fl_str_mv Vensaus, Priscila
Liang, Yunchang
Cichelero, Rafael
Dmitriev, Alexandre
Soler Illia, Galo Juan de Avila Arturo
Lingenfelder, Magalí Alejandra
author Vensaus, Priscila
author_facet Vensaus, Priscila
Liang, Yunchang
Cichelero, Rafael
Dmitriev, Alexandre
Soler Illia, Galo Juan de Avila Arturo
Lingenfelder, Magalí Alejandra
author_role author
author2 Liang, Yunchang
Cichelero, Rafael
Dmitriev, Alexandre
Soler Illia, Galo Juan de Avila Arturo
Lingenfelder, Magalí Alejandra
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ni nanoclusters
oxygen evolution catalysts
porous supports
electro- and photocatalysis
topic Ni nanoclusters
oxygen evolution catalysts
porous supports
electro- and photocatalysis
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The efficiency of green hydrogen production via water splitting is typically hindered by the sluggish kinetics of the oxygen evolution reaction (OER). Here we investigate the performance of various nickel nanoclusters, deposited via a binder-free gas-phase method, as OER catalysts on two distinct porous platforms: commercial gas diffusion layers (GDLs) for electrocatalysis and mesoporous thin films for photoelectrocatalysis. For dark electrocatalysis on GDL, we find a non-linear relationship between catalyst loading and activity, where the lowest Ni loadings exhibited the highest specific activity. Trace iron impurities in the electrolyte dramatically enhanced the performance, leading to a 120-fold increase in specific current for the lowest loading samples through the in situ formation of highly active NiFe oxyhydroxide species. When integrated as co-catalysts on mesoporous TiO₂ photoanodes, Ni nanoclusters significantly improved photocurrents, with an optimal loading of 0.27–0.89 μg cm−2. While Fe impurities also boosted photoelectrochemical performance at low Ni coverages, the effect was less pronounced and became detrimental at higher loadings. These findings underscore that the precise control of the catalyst loading and composition is decisive for designing scalable and highly efficient systems for water oxidation.
Fil: Vensaus, Priscila. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. École Polytechnique Fédérale de Lausanne; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Liang, Yunchang. École Polytechnique Fédérale de Lausanne; Suiza
Fil: Cichelero, Rafael. University of Gothenburg; Suecia
Fil: Dmitriev, Alexandre. University of Gothenburg; Suecia
Fil: Soler Illia, Galo Juan de Avila Arturo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina
Fil: Lingenfelder, Magalí Alejandra. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. Helvetia Institute for Science and Innovation; Suiza
description The efficiency of green hydrogen production via water splitting is typically hindered by the sluggish kinetics of the oxygen evolution reaction (OER). Here we investigate the performance of various nickel nanoclusters, deposited via a binder-free gas-phase method, as OER catalysts on two distinct porous platforms: commercial gas diffusion layers (GDLs) for electrocatalysis and mesoporous thin films for photoelectrocatalysis. For dark electrocatalysis on GDL, we find a non-linear relationship between catalyst loading and activity, where the lowest Ni loadings exhibited the highest specific activity. Trace iron impurities in the electrolyte dramatically enhanced the performance, leading to a 120-fold increase in specific current for the lowest loading samples through the in situ formation of highly active NiFe oxyhydroxide species. When integrated as co-catalysts on mesoporous TiO₂ photoanodes, Ni nanoclusters significantly improved photocurrents, with an optimal loading of 0.27–0.89 μg cm−2. While Fe impurities also boosted photoelectrochemical performance at low Ni coverages, the effect was less pronounced and became detrimental at higher loadings. These findings underscore that the precise control of the catalyst loading and composition is decisive for designing scalable and highly efficient systems for water oxidation.
publishDate 2026
dc.date.none.fl_str_mv 2026-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/285550
Vensaus, Priscila; Liang, Yunchang; Cichelero, Rafael; Dmitriev, Alexandre; Soler Illia, Galo Juan de Avila Arturo; et al.; Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis; IOP Publishing; Nanotechnology; 37; 4; 1-2026; 1-12
0957-4484
CONICET Digital
CONICET
url http://hdl.handle.net/11336/285550
identifier_str_mv Vensaus, Priscila; Liang, Yunchang; Cichelero, Rafael; Dmitriev, Alexandre; Soler Illia, Galo Juan de Avila Arturo; et al.; Ni nanoclusters as oxygen evolution catalysts on porous supports for electro- and photocatalysis; IOP Publishing; Nanotechnology; 37; 4; 1-2026; 1-12
0957-4484
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1361-6528/ae3573
info:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6528/ae3573
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.24418

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