Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces

Autores
Gonzalez, M. C. R.; Orive, A. G.; Salvarezza, Roberto Carlos; Creus, A. H.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Gold nanoparticle electrodeposition on a modified HOPG surface with a monolayer organic film based on aryl diazonium chemistry has been studied. This organic monolayer is electrochemically grown with the use of 2,2-diphenyl-1-picrylhydrazyl (DPPH), a radical scavenger. The electrodeposition of gold on this modified surface is highly favored resulting in an AuNP surface density comparable to that found on glassy carbon. AuNPs grow only in the areas covered by the organic monolayer leaving free clean HOPG zones. A progressive mechanism for the nucleation and growth is followed giving hemispherical AuNPs, homogeneously distributed on the surface and their sizes can be well controlled by the applied electrodeposition potential. By using AFM, C-AFM and electrochemical measurements with the aid of two redox probes, namely Fe(CN)64−/Fe(CN)63− and dopamine, relevant results about the electrochemical modified surface as well as the gold nanoparticles electrodeposited on them are obtained.
Fil: Gonzalez, M. C. R.. Universidad de La Laguna; España
Fil: Orive, A. G.. Universidad de La Laguna; España
Fil: Salvarezza, Roberto Carlos. 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: Creus, A. H.. Universidad de La Laguna; España
Materia
Electrografting
Graphite
Gold Nanoparticles
Electrochemistry
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:11336/48801
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfacesGonzalez, M. C. R.Orive, A. G.Salvarezza, Roberto CarlosCreus, A. H.ElectrograftingGraphiteGold NanoparticlesElectrochemistryhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Gold nanoparticle electrodeposition on a modified HOPG surface with a monolayer organic film based on aryl diazonium chemistry has been studied. This organic monolayer is electrochemically grown with the use of 2,2-diphenyl-1-picrylhydrazyl (DPPH), a radical scavenger. The electrodeposition of gold on this modified surface is highly favored resulting in an AuNP surface density comparable to that found on glassy carbon. AuNPs grow only in the areas covered by the organic monolayer leaving free clean HOPG zones. A progressive mechanism for the nucleation and growth is followed giving hemispherical AuNPs, homogeneously distributed on the surface and their sizes can be well controlled by the applied electrodeposition potential. By using AFM, C-AFM and electrochemical measurements with the aid of two redox probes, namely Fe(CN)64−/Fe(CN)63− and dopamine, relevant results about the electrochemical modified surface as well as the gold nanoparticles electrodeposited on them are obtained.Fil: Gonzalez, M. C. R.. Universidad de La Laguna; EspañaFil: Orive, A. G.. Universidad de La Laguna; EspañaFil: Salvarezza, Roberto Carlos. 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: Creus, A. H.. Universidad de La Laguna; EspañaRoyal Society of Chemistry2016-01info: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/11336/48801Gonzalez, M. C. R.; Orive, A. G.; Salvarezza, Roberto Carlos; Creus, A. H.; Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 18; 3; 1-2016; 1953-19601463-9076CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/c5cp06415einfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2016/CP/C5CP06415Einfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:03:35Zoai:ri.conicet.gov.ar:11336/48801instacron: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 10:03:35.776CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces
title Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces
spellingShingle Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces
Gonzalez, M. C. R.
Electrografting
Graphite
Gold Nanoparticles
Electrochemistry
title_short Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces
title_full Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces
title_fullStr Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces
title_full_unstemmed Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces
title_sort Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces
dc.creator.none.fl_str_mv Gonzalez, M. C. R.
Orive, A. G.
Salvarezza, Roberto Carlos
Creus, A. H.
author Gonzalez, M. C. R.
author_facet Gonzalez, M. C. R.
Orive, A. G.
Salvarezza, Roberto Carlos
Creus, A. H.
author_role author
author2 Orive, A. G.
Salvarezza, Roberto Carlos
Creus, A. H.
author2_role author
author
author
dc.subject.none.fl_str_mv Electrografting
Graphite
Gold Nanoparticles
Electrochemistry
topic Electrografting
Graphite
Gold Nanoparticles
Electrochemistry
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Gold nanoparticle electrodeposition on a modified HOPG surface with a monolayer organic film based on aryl diazonium chemistry has been studied. This organic monolayer is electrochemically grown with the use of 2,2-diphenyl-1-picrylhydrazyl (DPPH), a radical scavenger. The electrodeposition of gold on this modified surface is highly favored resulting in an AuNP surface density comparable to that found on glassy carbon. AuNPs grow only in the areas covered by the organic monolayer leaving free clean HOPG zones. A progressive mechanism for the nucleation and growth is followed giving hemispherical AuNPs, homogeneously distributed on the surface and their sizes can be well controlled by the applied electrodeposition potential. By using AFM, C-AFM and electrochemical measurements with the aid of two redox probes, namely Fe(CN)64−/Fe(CN)63− and dopamine, relevant results about the electrochemical modified surface as well as the gold nanoparticles electrodeposited on them are obtained.
Fil: Gonzalez, M. C. R.. Universidad de La Laguna; España
Fil: Orive, A. G.. Universidad de La Laguna; España
Fil: Salvarezza, Roberto Carlos. 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: Creus, A. H.. Universidad de La Laguna; España
description Gold nanoparticle electrodeposition on a modified HOPG surface with a monolayer organic film based on aryl diazonium chemistry has been studied. This organic monolayer is electrochemically grown with the use of 2,2-diphenyl-1-picrylhydrazyl (DPPH), a radical scavenger. The electrodeposition of gold on this modified surface is highly favored resulting in an AuNP surface density comparable to that found on glassy carbon. AuNPs grow only in the areas covered by the organic monolayer leaving free clean HOPG zones. A progressive mechanism for the nucleation and growth is followed giving hemispherical AuNPs, homogeneously distributed on the surface and their sizes can be well controlled by the applied electrodeposition potential. By using AFM, C-AFM and electrochemical measurements with the aid of two redox probes, namely Fe(CN)64−/Fe(CN)63− and dopamine, relevant results about the electrochemical modified surface as well as the gold nanoparticles electrodeposited on them are obtained.
publishDate 2016
dc.date.none.fl_str_mv 2016-01
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/11336/48801
Gonzalez, M. C. R.; Orive, A. G.; Salvarezza, Roberto Carlos; Creus, A. H.; Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 18; 3; 1-2016; 1953-1960
1463-9076
CONICET Digital
CONICET
url http://hdl.handle.net/11336/48801
identifier_str_mv Gonzalez, M. C. R.; Orive, A. G.; Salvarezza, Roberto Carlos; Creus, A. H.; Electrodeposition of gold nanoparticles on aryl diazonium monolayer functionalized HOPG surfaces; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 18; 3; 1-2016; 1953-1960
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/c5cp06415e
info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2016/CP/C5CP06415E
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 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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