Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms

Autores
Brust, Mathias; Ramírez, Silvana A.; Gordillo, Gabriel Jorge
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Underpotential deposition (UPD) of cadmium on 15 nm gold nanoparticles stabilized by 1-mercapto-undecane-11-tetra(ethylene glycol) has been studied by cyclic voltammetry (CV). Particles are adsorbed to a hanging mercury drop electrode (HMDE). It is shown that single cadmium atoms are deposited onto the same surface sites that are active for adsorptive hydrogen reduction when cadmium is absent. Depending on the solution pH, the deposition of cadmium atoms either blocks hydrogen reduction or vice versa, depending on which process occurs first during the cathodic potential sweep. Another remarkable finding is that single cadmium atoms UPD-deposited are also active for adsorptive hydrogen reduction. The use of CV to interrogate surface protected nanoparticles adsorbed on a HMDE represents a powerful method to study the electrocatalytic activity.
Fil: Brust, Mathias. University of Liverpool; Reino Unido
Fil: Ramírez, Silvana A.. Universidad Nacional de General Sarmiento; Argentina
Fil: Gordillo, Gabriel Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Materia
CADMIUM
ELECTROCHEMISTRY
GOLD NANOPARTICLES
PROTON REDUCTION
UNDERPOTENTIAL DEPOSITION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/88644
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium AtomsBrust, MathiasRamírez, Silvana A.Gordillo, Gabriel JorgeCADMIUMELECTROCHEMISTRYGOLD NANOPARTICLESPROTON REDUCTIONUNDERPOTENTIAL DEPOSITIONhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Underpotential deposition (UPD) of cadmium on 15 nm gold nanoparticles stabilized by 1-mercapto-undecane-11-tetra(ethylene glycol) has been studied by cyclic voltammetry (CV). Particles are adsorbed to a hanging mercury drop electrode (HMDE). It is shown that single cadmium atoms are deposited onto the same surface sites that are active for adsorptive hydrogen reduction when cadmium is absent. Depending on the solution pH, the deposition of cadmium atoms either blocks hydrogen reduction or vice versa, depending on which process occurs first during the cathodic potential sweep. Another remarkable finding is that single cadmium atoms UPD-deposited are also active for adsorptive hydrogen reduction. The use of CV to interrogate surface protected nanoparticles adsorbed on a HMDE represents a powerful method to study the electrocatalytic activity.Fil: Brust, Mathias. University of Liverpool; Reino UnidoFil: Ramírez, Silvana A.. Universidad Nacional de General Sarmiento; ArgentinaFil: Gordillo, Gabriel Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaWiley2018-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88644Brust, Mathias; Ramírez, Silvana A.; Gordillo, Gabriel Jorge; Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms; Wiley; ChemElectroChem; 5; 12; 6-2018; 1586-15902196-0216CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/celc.201800282info:eu-repo/semantics/altIdentifier/doi/10.1002/celc.201800282info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:53:14Zoai:ri.conicet.gov.ar:11336/88644instacron: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 09:53:14.488CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms
title Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms
spellingShingle Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms
Brust, Mathias
CADMIUM
ELECTROCHEMISTRY
GOLD NANOPARTICLES
PROTON REDUCTION
UNDERPOTENTIAL DEPOSITION
title_short Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms
title_full Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms
title_fullStr Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms
title_full_unstemmed Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms
title_sort Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms
dc.creator.none.fl_str_mv Brust, Mathias
Ramírez, Silvana A.
Gordillo, Gabriel Jorge
author Brust, Mathias
author_facet Brust, Mathias
Ramírez, Silvana A.
Gordillo, Gabriel Jorge
author_role author
author2 Ramírez, Silvana A.
Gordillo, Gabriel Jorge
author2_role author
author
dc.subject.none.fl_str_mv CADMIUM
ELECTROCHEMISTRY
GOLD NANOPARTICLES
PROTON REDUCTION
UNDERPOTENTIAL DEPOSITION
topic CADMIUM
ELECTROCHEMISTRY
GOLD NANOPARTICLES
PROTON REDUCTION
UNDERPOTENTIAL DEPOSITION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Underpotential deposition (UPD) of cadmium on 15 nm gold nanoparticles stabilized by 1-mercapto-undecane-11-tetra(ethylene glycol) has been studied by cyclic voltammetry (CV). Particles are adsorbed to a hanging mercury drop electrode (HMDE). It is shown that single cadmium atoms are deposited onto the same surface sites that are active for adsorptive hydrogen reduction when cadmium is absent. Depending on the solution pH, the deposition of cadmium atoms either blocks hydrogen reduction or vice versa, depending on which process occurs first during the cathodic potential sweep. Another remarkable finding is that single cadmium atoms UPD-deposited are also active for adsorptive hydrogen reduction. The use of CV to interrogate surface protected nanoparticles adsorbed on a HMDE represents a powerful method to study the electrocatalytic activity.
Fil: Brust, Mathias. University of Liverpool; Reino Unido
Fil: Ramírez, Silvana A.. Universidad Nacional de General Sarmiento; Argentina
Fil: Gordillo, Gabriel Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
description Underpotential deposition (UPD) of cadmium on 15 nm gold nanoparticles stabilized by 1-mercapto-undecane-11-tetra(ethylene glycol) has been studied by cyclic voltammetry (CV). Particles are adsorbed to a hanging mercury drop electrode (HMDE). It is shown that single cadmium atoms are deposited onto the same surface sites that are active for adsorptive hydrogen reduction when cadmium is absent. Depending on the solution pH, the deposition of cadmium atoms either blocks hydrogen reduction or vice versa, depending on which process occurs first during the cathodic potential sweep. Another remarkable finding is that single cadmium atoms UPD-deposited are also active for adsorptive hydrogen reduction. The use of CV to interrogate surface protected nanoparticles adsorbed on a HMDE represents a powerful method to study the electrocatalytic activity.
publishDate 2018
dc.date.none.fl_str_mv 2018-06
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/11336/88644
Brust, Mathias; Ramírez, Silvana A.; Gordillo, Gabriel Jorge; Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms; Wiley; ChemElectroChem; 5; 12; 6-2018; 1586-1590
2196-0216
CONICET Digital
CONICET
url http://hdl.handle.net/11336/88644
identifier_str_mv Brust, Mathias; Ramírez, Silvana A.; Gordillo, Gabriel Jorge; Site-Specific Modification of Gold Nanoparticles by Underpotential Deposition of Cadmium Atoms; Wiley; ChemElectroChem; 5; 12; 6-2018; 1586-1590
2196-0216
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://onlinelibrary.wiley.com/doi/abs/10.1002/celc.201800282
info:eu-repo/semantics/altIdentifier/doi/10.1002/celc.201800282
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
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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