Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticles

[EN] Advanced applications of colloidal nanoparticles (NPs) become to depend on their specific shape, which is controlled by the adsorption behavior of the capping agent involved in their synthesis. To understand the way in which citric acid determines the shape of gold NPs, the adsorption behavior...

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Autores: Gisbert-González, José M., Cheuquepán, William, Herrero, Enrique, Feliu, Juan M., Ferre Vilaplana, Adolfo|||0000-0002-9032-9015
Formato: artículo
Fecha de publicación:2020
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/170278
Acesso em linha:https://riunet.upv.es/handle/10251/170278
Access Level:acceso abierto
Palavra-chave:LENGUAJES Y SISTEMAS INFORMATICOS
03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edades
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spelling Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticlesGisbert-González, José M.Cheuquepán, WilliamHerrero, EnriqueFeliu, Juan M.Ferre Vilaplana, Adolfo|||0000-0002-9032-9015LENGUAJES Y SISTEMAS INFORMATICOS03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edades[EN] Advanced applications of colloidal nanoparticles (NPs) become to depend on their specific shape, which is controlled by the adsorption behavior of the capping agent involved in their synthesis. To understand the way in which citric acid determines the shape of gold NPs, the adsorption behavior of citrate on gold under the synthesis conditions is here investigated from electrochemical experiments on well-defined surfaces. Gibb excesses and charge numbers for the citrate adlayers deposited on the Au (111), Au(100) and Au(110) electrodes when a potential is applied were estimated at pHs 1 and 3. From these results, FTIR spectra and DFT calculations, it is concluded that solvated citrate can become simultaneously adsorbed through three dehydrogenated carboxylic groups in bidentate configuration on Au(111), but only through two on Au(100) and Au(110). As a result of this behavior, citrate can become more strongly adsorbed on Au(111) than on the other two basal planes of gold under the synthesis conditions, which would explain why tetrahedral and octahedral colloidal gold NPs are preferentially shaped when citric acid is used as the capping agent in water. This conclusion coincides with the previously one obtained on platinum, suggesting that the mechanism here described would operate also on other metals having fcc structure.This work has been financially supported by the MCINN-FEDER (Spain) through project CTQ2016-76221-P.ElsevierInstituto Universitario Mixto de Tecnología de InformáticaDepartamento de Sistemas Informáticos y ComputaciónEscuela Politécnica Superior de AlcoyEuropean Regional Development FundMinisterio de Economía y CompetitividadRepositorio Institucional de la Universitat Politècnica de València Riunet20202020-10-15journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/170278reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 CTQ2016-76221-P ESTRUCTURA INTERFACIAL Y REACTIVIDAD ELECTROQUIMICAopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1702782026-06-13T07:49:27Z
dc.title.none.fl_str_mv Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticles
title Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticles
spellingShingle Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticles
Gisbert-González, José M.
LENGUAJES Y SISTEMAS INFORMATICOS
03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edades
title_short Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticles
title_full Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticles
title_fullStr Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticles
title_full_unstemmed Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticles
title_sort Citrate adsorption on gold: Understanding the shaping mechanism of nanoparticles
dc.creator.none.fl_str_mv Gisbert-González, José M.
Cheuquepán, William
Herrero, Enrique
Feliu, Juan M.
Ferre Vilaplana, Adolfo|||0000-0002-9032-9015
author Gisbert-González, José M.
author_facet Gisbert-González, José M.
Cheuquepán, William
Herrero, Enrique
Feliu, Juan M.
Ferre Vilaplana, Adolfo|||0000-0002-9032-9015
author_role author
author2 Cheuquepán, William
Herrero, Enrique
Feliu, Juan M.
Ferre Vilaplana, Adolfo|||0000-0002-9032-9015
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Instituto Universitario Mixto de Tecnología de Informática
Departamento de Sistemas Informáticos y Computación
Escuela Politécnica Superior de Alcoy
European Regional Development Fund
Ministerio de Economía y Competitividad
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv LENGUAJES Y SISTEMAS INFORMATICOS
03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edades
topic LENGUAJES Y SISTEMAS INFORMATICOS
03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edades
description [EN] Advanced applications of colloidal nanoparticles (NPs) become to depend on their specific shape, which is controlled by the adsorption behavior of the capping agent involved in their synthesis. To understand the way in which citric acid determines the shape of gold NPs, the adsorption behavior of citrate on gold under the synthesis conditions is here investigated from electrochemical experiments on well-defined surfaces. Gibb excesses and charge numbers for the citrate adlayers deposited on the Au (111), Au(100) and Au(110) electrodes when a potential is applied were estimated at pHs 1 and 3. From these results, FTIR spectra and DFT calculations, it is concluded that solvated citrate can become simultaneously adsorbed through three dehydrogenated carboxylic groups in bidentate configuration on Au(111), but only through two on Au(100) and Au(110). As a result of this behavior, citrate can become more strongly adsorbed on Au(111) than on the other two basal planes of gold under the synthesis conditions, which would explain why tetrahedral and octahedral colloidal gold NPs are preferentially shaped when citric acid is used as the capping agent in water. This conclusion coincides with the previously one obtained on platinum, suggesting that the mechanism here described would operate also on other metals having fcc structure.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-10-15
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/170278
url https://riunet.upv.es/handle/10251/170278
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 CTQ2016-76221-P ESTRUCTURA INTERFACIAL Y REACTIVIDAD ELECTROQUIMICA
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301629

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