Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media

Autores
Hötger, Diana; Etzkorn, Markus; Morchutt, Claudius; Wurster, Benjamín; Dreiser, Jan; Stepanow, Sebastián; Grumelli, Doris Elda; Gutzler, Rico; Kern, Klaus
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Transition metal atoms stabilised by organic ligands or as oxides exhibit promising catalytic activity for the electrocatalytic reduction and evolution of oxygen. Built-up from earth-abundant elements, they offer affordable alternatives to precious-metal based catalysts for application in fuel cells and electrolysers. For the understanding of a catalyst’s activity, insight into its structure on the atomic scale is of highest importance, yet commonly challenging to experimentally access. Here, the structural integrity of a bimetallic iron tetrapyridylporphyrin with co-adsorbed cobalt electrocatalyst on Au(111) is investigated using scanning tunneling microscopy and X-ray absorption spectroscopy. Topographic and spectroscopic characterization reveals structural changes of the molecular coordination network after oxygen reduction, and its decomposition and transformation into catalytically active Co/Fe (oxyhydr)oxide during oxygen evolution. The data establishes a structure–property relationship for the catalyst as a function of electrochemical potential and, in addition, highlights how the reaction direction of electrochemical interconversion between molecular oxygen and hydroxyl anions can have very different effects on the catalyst’s structure.
Fil: Hötger, Diana. Max Planck Institute For Solid State Research; Alemania
Fil: Etzkorn, Markus. Technische Universität Braunschweig; Alemania
Fil: Morchutt, Claudius. Max Planck Institute For Solid State Research; Alemania. École Polytechnique Fédérale de Lausanne; Suiza
Fil: Wurster, Benjamín. Max Planck Institute For Solid State Research; Alemania
Fil: Dreiser, Jan. Paul Scherrer Institut; Suiza
Fil: Stepanow, Sebastián. Eidgenössische Technische Hochschule Zürich; Suiza
Fil: Grumelli, Doris Elda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Gutzler, Rico. Max Planck Institute For Solid State Research; Alemania
Fil: Kern, Klaus. Max Planck Institute For Solid State Research; Alemania. École Polytechnique Fédérale de Lausanne; Suiza
Materia
ELECTROCATALYISIS
MOLECULAR ASSEMBLY
STM
UHV
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:11336/118881
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline mediaHötger, DianaEtzkorn, MarkusMorchutt, ClaudiusWurster, BenjamínDreiser, JanStepanow, SebastiánGrumelli, Doris EldaGutzler, RicoKern, KlausELECTROCATALYISISMOLECULAR ASSEMBLYSTMUHVhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Transition metal atoms stabilised by organic ligands or as oxides exhibit promising catalytic activity for the electrocatalytic reduction and evolution of oxygen. Built-up from earth-abundant elements, they offer affordable alternatives to precious-metal based catalysts for application in fuel cells and electrolysers. For the understanding of a catalyst’s activity, insight into its structure on the atomic scale is of highest importance, yet commonly challenging to experimentally access. Here, the structural integrity of a bimetallic iron tetrapyridylporphyrin with co-adsorbed cobalt electrocatalyst on Au(111) is investigated using scanning tunneling microscopy and X-ray absorption spectroscopy. Topographic and spectroscopic characterization reveals structural changes of the molecular coordination network after oxygen reduction, and its decomposition and transformation into catalytically active Co/Fe (oxyhydr)oxide during oxygen evolution. The data establishes a structure–property relationship for the catalyst as a function of electrochemical potential and, in addition, highlights how the reaction direction of electrochemical interconversion between molecular oxygen and hydroxyl anions can have very different effects on the catalyst’s structure.Fil: Hötger, Diana. Max Planck Institute For Solid State Research; AlemaniaFil: Etzkorn, Markus. Technische Universität Braunschweig; AlemaniaFil: Morchutt, Claudius. Max Planck Institute For Solid State Research; Alemania. École Polytechnique Fédérale de Lausanne; SuizaFil: Wurster, Benjamín. Max Planck Institute For Solid State Research; AlemaniaFil: Dreiser, Jan. Paul Scherrer Institut; SuizaFil: Stepanow, Sebastián. Eidgenössische Technische Hochschule Zürich; SuizaFil: Grumelli, Doris Elda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Gutzler, Rico. Max Planck Institute For Solid State Research; AlemaniaFil: Kern, Klaus. Max Planck Institute For Solid State Research; Alemania. École Polytechnique Fédérale de Lausanne; SuizaRoyal Society of Chemistry2019-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/118881Hötger, Diana; Etzkorn, Markus; Morchutt, Claudius; Wurster, Benjamín; Dreiser, Jan; et al.; Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 21; 5; 1-2019; 2587-25941463-9076CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/c8cp07463ainfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlepdf/2019/cp/c8cp07463ainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:03:36Zoai:ri.conicet.gov.ar:11336/118881instacron: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:34982025-09-03 10:03:37.102CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media
title Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media
spellingShingle Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media
Hötger, Diana
ELECTROCATALYISIS
MOLECULAR ASSEMBLY
STM
UHV
title_short Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media
title_full Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media
title_fullStr Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media
title_full_unstemmed Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media
title_sort Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media
dc.creator.none.fl_str_mv Hötger, Diana
Etzkorn, Markus
Morchutt, Claudius
Wurster, Benjamín
Dreiser, Jan
Stepanow, Sebastián
Grumelli, Doris Elda
Gutzler, Rico
Kern, Klaus
author Hötger, Diana
author_facet Hötger, Diana
Etzkorn, Markus
Morchutt, Claudius
Wurster, Benjamín
Dreiser, Jan
Stepanow, Sebastián
Grumelli, Doris Elda
Gutzler, Rico
Kern, Klaus
author_role author
author2 Etzkorn, Markus
Morchutt, Claudius
Wurster, Benjamín
Dreiser, Jan
Stepanow, Sebastián
Grumelli, Doris Elda
Gutzler, Rico
Kern, Klaus
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ELECTROCATALYISIS
MOLECULAR ASSEMBLY
STM
UHV
topic ELECTROCATALYISIS
MOLECULAR ASSEMBLY
STM
UHV
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Transition metal atoms stabilised by organic ligands or as oxides exhibit promising catalytic activity for the electrocatalytic reduction and evolution of oxygen. Built-up from earth-abundant elements, they offer affordable alternatives to precious-metal based catalysts for application in fuel cells and electrolysers. For the understanding of a catalyst’s activity, insight into its structure on the atomic scale is of highest importance, yet commonly challenging to experimentally access. Here, the structural integrity of a bimetallic iron tetrapyridylporphyrin with co-adsorbed cobalt electrocatalyst on Au(111) is investigated using scanning tunneling microscopy and X-ray absorption spectroscopy. Topographic and spectroscopic characterization reveals structural changes of the molecular coordination network after oxygen reduction, and its decomposition and transformation into catalytically active Co/Fe (oxyhydr)oxide during oxygen evolution. The data establishes a structure–property relationship for the catalyst as a function of electrochemical potential and, in addition, highlights how the reaction direction of electrochemical interconversion between molecular oxygen and hydroxyl anions can have very different effects on the catalyst’s structure.
Fil: Hötger, Diana. Max Planck Institute For Solid State Research; Alemania
Fil: Etzkorn, Markus. Technische Universität Braunschweig; Alemania
Fil: Morchutt, Claudius. Max Planck Institute For Solid State Research; Alemania. École Polytechnique Fédérale de Lausanne; Suiza
Fil: Wurster, Benjamín. Max Planck Institute For Solid State Research; Alemania
Fil: Dreiser, Jan. Paul Scherrer Institut; Suiza
Fil: Stepanow, Sebastián. Eidgenössische Technische Hochschule Zürich; Suiza
Fil: Grumelli, Doris Elda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Gutzler, Rico. Max Planck Institute For Solid State Research; Alemania
Fil: Kern, Klaus. Max Planck Institute For Solid State Research; Alemania. École Polytechnique Fédérale de Lausanne; Suiza
description Transition metal atoms stabilised by organic ligands or as oxides exhibit promising catalytic activity for the electrocatalytic reduction and evolution of oxygen. Built-up from earth-abundant elements, they offer affordable alternatives to precious-metal based catalysts for application in fuel cells and electrolysers. For the understanding of a catalyst’s activity, insight into its structure on the atomic scale is of highest importance, yet commonly challenging to experimentally access. Here, the structural integrity of a bimetallic iron tetrapyridylporphyrin with co-adsorbed cobalt electrocatalyst on Au(111) is investigated using scanning tunneling microscopy and X-ray absorption spectroscopy. Topographic and spectroscopic characterization reveals structural changes of the molecular coordination network after oxygen reduction, and its decomposition and transformation into catalytically active Co/Fe (oxyhydr)oxide during oxygen evolution. The data establishes a structure–property relationship for the catalyst as a function of electrochemical potential and, in addition, highlights how the reaction direction of electrochemical interconversion between molecular oxygen and hydroxyl anions can have very different effects on the catalyst’s structure.
publishDate 2019
dc.date.none.fl_str_mv 2019-01
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/11336/118881
Hötger, Diana; Etzkorn, Markus; Morchutt, Claudius; Wurster, Benjamín; Dreiser, Jan; et al.; Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 21; 5; 1-2019; 2587-2594
1463-9076
CONICET Digital
CONICET
url http://hdl.handle.net/11336/118881
identifier_str_mv Hötger, Diana; Etzkorn, Markus; Morchutt, Claudius; Wurster, Benjamín; Dreiser, Jan; et al.; Stability of metallo-porphyrin networks under oxygen reduction and evolution conditions in alkaline media; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 21; 5; 1-2019; 2587-2594
1463-9076
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1039/c8cp07463a
info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlepdf/2019/cp/c8cp07463a
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 Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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 13.13397

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