Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates

Autores
Ambrusi, Rubén Eduardo; Pronsato, Maria Estela; Garcia, Silvana Graciela
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cadmium underpotential deposition (UPD) on Ag particles modified highly ordered pyrolytic graphite (HOPG) surfaces, and the involved alloy formation were studied by conventional electrochemical techniques. Voltammetric results indicated that the Cd UPD followed an adsorption behavior different from that observed for massive Ag electrodes and Ag particles supported on vitreous carbon. Nanometer-sized bimetallic Cd–Ag particles were characterized by ex situ atomic force microscopy (AFM). Initially, AFM images show Ag deposits of similar size distributed preferably on HOPG step edges. No remarkable morphological changes are observed on the surface after the subsequent Cd deposition, suggesting that the Cd particles are deposited selectively over the Ag crystals. From the analysis of desorption spectra, employing different polarization times, and density functional theory (DFT) calculations, the formation of a Cd–Ag surface alloy could be inferred.
Fil: Ambrusi, Rubén Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Pronsato, Maria Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Garcia, Silvana Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Materia
Bimetallic Particles
Cd&Ndash;Ag Alloy
Density Functional Theory
Electrodeposition
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:11336/64614
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substratesAmbrusi, Rubén EduardoPronsato, Maria EstelaGarcia, Silvana GracielaBimetallic ParticlesCd&Ndash;Ag AlloyDensity Functional TheoryElectrodepositionUnderpotential Depositionhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2https://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Cadmium underpotential deposition (UPD) on Ag particles modified highly ordered pyrolytic graphite (HOPG) surfaces, and the involved alloy formation were studied by conventional electrochemical techniques. Voltammetric results indicated that the Cd UPD followed an adsorption behavior different from that observed for massive Ag electrodes and Ag particles supported on vitreous carbon. Nanometer-sized bimetallic Cd–Ag particles were characterized by ex situ atomic force microscopy (AFM). Initially, AFM images show Ag deposits of similar size distributed preferably on HOPG step edges. No remarkable morphological changes are observed on the surface after the subsequent Cd deposition, suggesting that the Cd particles are deposited selectively over the Ag crystals. From the analysis of desorption spectra, employing different polarization times, and density functional theory (DFT) calculations, the formation of a Cd–Ag surface alloy could be inferred.Fil: Ambrusi, Rubén Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Pronsato, Maria Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaFil: Garcia, Silvana Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaSpringer2018-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/64614Ambrusi, Rubén Eduardo; Pronsato, Maria Estela; Garcia, Silvana Graciela; Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates; Springer; Journal of Solid State Electrochemistry (print); 22; 1; 1-2018; 193-2021432-8488CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10008-017-3735-8info:eu-repo/semantics/altIdentifier/doi/10.1007/s10008-017-3735-8info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:53:12Zoai:ri.conicet.gov.ar:11336/64614instacron: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 09:53:12.76CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates
title Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates
spellingShingle Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates
Ambrusi, Rubén Eduardo
Bimetallic Particles
Cd&Ndash;Ag Alloy
Density Functional Theory
Electrodeposition
Underpotential Deposition
title_short Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates
title_full Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates
title_fullStr Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates
title_full_unstemmed Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates
title_sort Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates
dc.creator.none.fl_str_mv Ambrusi, Rubén Eduardo
Pronsato, Maria Estela
Garcia, Silvana Graciela
author Ambrusi, Rubén Eduardo
author_facet Ambrusi, Rubén Eduardo
Pronsato, Maria Estela
Garcia, Silvana Graciela
author_role author
author2 Pronsato, Maria Estela
Garcia, Silvana Graciela
author2_role author
author
dc.subject.none.fl_str_mv Bimetallic Particles
Cd&Ndash;Ag Alloy
Density Functional Theory
Electrodeposition
Underpotential Deposition
topic Bimetallic Particles
Cd&Ndash;Ag Alloy
Density Functional Theory
Electrodeposition
Underpotential Deposition
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Cadmium underpotential deposition (UPD) on Ag particles modified highly ordered pyrolytic graphite (HOPG) surfaces, and the involved alloy formation were studied by conventional electrochemical techniques. Voltammetric results indicated that the Cd UPD followed an adsorption behavior different from that observed for massive Ag electrodes and Ag particles supported on vitreous carbon. Nanometer-sized bimetallic Cd–Ag particles were characterized by ex situ atomic force microscopy (AFM). Initially, AFM images show Ag deposits of similar size distributed preferably on HOPG step edges. No remarkable morphological changes are observed on the surface after the subsequent Cd deposition, suggesting that the Cd particles are deposited selectively over the Ag crystals. From the analysis of desorption spectra, employing different polarization times, and density functional theory (DFT) calculations, the formation of a Cd–Ag surface alloy could be inferred.
Fil: Ambrusi, Rubén Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Pronsato, Maria Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Garcia, Silvana Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
description Cadmium underpotential deposition (UPD) on Ag particles modified highly ordered pyrolytic graphite (HOPG) surfaces, and the involved alloy formation were studied by conventional electrochemical techniques. Voltammetric results indicated that the Cd UPD followed an adsorption behavior different from that observed for massive Ag electrodes and Ag particles supported on vitreous carbon. Nanometer-sized bimetallic Cd–Ag particles were characterized by ex situ atomic force microscopy (AFM). Initially, AFM images show Ag deposits of similar size distributed preferably on HOPG step edges. No remarkable morphological changes are observed on the surface after the subsequent Cd deposition, suggesting that the Cd particles are deposited selectively over the Ag crystals. From the analysis of desorption spectra, employing different polarization times, and density functional theory (DFT) calculations, the formation of a Cd–Ag surface alloy could be inferred.
publishDate 2018
dc.date.none.fl_str_mv 2018-01
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/11336/64614
Ambrusi, Rubén Eduardo; Pronsato, Maria Estela; Garcia, Silvana Graciela; Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates; Springer; Journal of Solid State Electrochemistry (print); 22; 1; 1-2018; 193-202
1432-8488
CONICET Digital
CONICET
url http://hdl.handle.net/11336/64614
identifier_str_mv Ambrusi, Rubén Eduardo; Pronsato, Maria Estela; Garcia, Silvana Graciela; Underpotential deposition and involved alloy formation of cadmium on silver particles modified HOPG substrates; Springer; Journal of Solid State Electrochemistry (print); 22; 1; 1-2018; 193-202
1432-8488
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://link.springer.com/article/10.1007/s10008-017-3735-8
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10008-017-3735-8
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
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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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