The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study

Autores
Mayoral, Alvaro; Mejia Rosales, Sergio Javier; Mariscal, Marcelo; Pérez-Tijerina, Eduardo; José-Yacamán, Miguel
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report the formation of Au/Co nanoparticles and their characterization by aberration (Cs) corrected scanning transmission electron microscopy (STEM). The nanoparticles were synthesized by inert gas condensation, forming initially core-shell and bimetallic crystals. However, after thermal treatment at normal atmospheric conditions, the Co nanoparticles changed their morphology into a fine layer forming a perfect interface with the gold. The ordering of the zone rich in Co presents a fcc arrangement matching the gold lattice. The atomic analysis on the interface and the comparison of the STEM images with numerical simulations corroborated the atomic substitution of gold by cobalt.
Fil: Mayoral, Alvaro. University of Texas; Estados Unidos
Fil: Mejia Rosales, Sergio Javier. Universidad Autónoma de Nuevo León; México. University of Texas; Estados Unidos
Fil: Mariscal, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Pérez-Tijerina, Eduardo. Universidad Autónoma de Nuevo León; México
Fil: José-Yacamán, Miguel. University of Texas; Estados Unidos
Materia
Nanoparticle
Gas-Phase Evaration
Simulations
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:11336/67507
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The Co-Au interface in bimetallic nanoparticles: A high resolution STEM studyMayoral, AlvaroMejia Rosales, Sergio JavierMariscal, MarceloPérez-Tijerina, EduardoJosé-Yacamán, MiguelNanoparticleGas-Phase EvarationSimulationshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report the formation of Au/Co nanoparticles and their characterization by aberration (Cs) corrected scanning transmission electron microscopy (STEM). The nanoparticles were synthesized by inert gas condensation, forming initially core-shell and bimetallic crystals. However, after thermal treatment at normal atmospheric conditions, the Co nanoparticles changed their morphology into a fine layer forming a perfect interface with the gold. The ordering of the zone rich in Co presents a fcc arrangement matching the gold lattice. The atomic analysis on the interface and the comparison of the STEM images with numerical simulations corroborated the atomic substitution of gold by cobalt.Fil: Mayoral, Alvaro. University of Texas; Estados UnidosFil: Mejia Rosales, Sergio Javier. Universidad Autónoma de Nuevo León; México. University of Texas; Estados UnidosFil: Mariscal, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Pérez-Tijerina, Eduardo. Universidad Autónoma de Nuevo León; MéxicoFil: José-Yacamán, Miguel. University of Texas; Estados UnidosRoyal Society of Chemistry2010-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/67507Mayoral, Alvaro; Mejia Rosales, Sergio Javier; Mariscal, Marcelo; Pérez-Tijerina, Eduardo; José-Yacamán, Miguel; The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study; Royal Society of Chemistry; Nanoscale; 2; 12; 11-2010; 2647-26512040-33642040-3372CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2010/NR/c0nr00498ginfo:eu-repo/semantics/altIdentifier/doi/10.1039/c0nr00498ginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:11Zoai:ri.conicet.gov.ar:11336/67507instacron: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:34982025-09-29 09:47:11.609CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study
title The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study
spellingShingle The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study
Mayoral, Alvaro
Nanoparticle
Gas-Phase Evaration
Simulations
title_short The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study
title_full The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study
title_fullStr The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study
title_full_unstemmed The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study
title_sort The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study
dc.creator.none.fl_str_mv Mayoral, Alvaro
Mejia Rosales, Sergio Javier
Mariscal, Marcelo
Pérez-Tijerina, Eduardo
José-Yacamán, Miguel
author Mayoral, Alvaro
author_facet Mayoral, Alvaro
Mejia Rosales, Sergio Javier
Mariscal, Marcelo
Pérez-Tijerina, Eduardo
José-Yacamán, Miguel
author_role author
author2 Mejia Rosales, Sergio Javier
Mariscal, Marcelo
Pérez-Tijerina, Eduardo
José-Yacamán, Miguel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Nanoparticle
Gas-Phase Evaration
Simulations
topic Nanoparticle
Gas-Phase Evaration
Simulations
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We report the formation of Au/Co nanoparticles and their characterization by aberration (Cs) corrected scanning transmission electron microscopy (STEM). The nanoparticles were synthesized by inert gas condensation, forming initially core-shell and bimetallic crystals. However, after thermal treatment at normal atmospheric conditions, the Co nanoparticles changed their morphology into a fine layer forming a perfect interface with the gold. The ordering of the zone rich in Co presents a fcc arrangement matching the gold lattice. The atomic analysis on the interface and the comparison of the STEM images with numerical simulations corroborated the atomic substitution of gold by cobalt.
Fil: Mayoral, Alvaro. University of Texas; Estados Unidos
Fil: Mejia Rosales, Sergio Javier. Universidad Autónoma de Nuevo León; México. University of Texas; Estados Unidos
Fil: Mariscal, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Pérez-Tijerina, Eduardo. Universidad Autónoma de Nuevo León; México
Fil: José-Yacamán, Miguel. University of Texas; Estados Unidos
description We report the formation of Au/Co nanoparticles and their characterization by aberration (Cs) corrected scanning transmission electron microscopy (STEM). The nanoparticles were synthesized by inert gas condensation, forming initially core-shell and bimetallic crystals. However, after thermal treatment at normal atmospheric conditions, the Co nanoparticles changed their morphology into a fine layer forming a perfect interface with the gold. The ordering of the zone rich in Co presents a fcc arrangement matching the gold lattice. The atomic analysis on the interface and the comparison of the STEM images with numerical simulations corroborated the atomic substitution of gold by cobalt.
publishDate 2010
dc.date.none.fl_str_mv 2010-11
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/11336/67507
Mayoral, Alvaro; Mejia Rosales, Sergio Javier; Mariscal, Marcelo; Pérez-Tijerina, Eduardo; José-Yacamán, Miguel; The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study; Royal Society of Chemistry; Nanoscale; 2; 12; 11-2010; 2647-2651
2040-3364
2040-3372
CONICET Digital
CONICET
url http://hdl.handle.net/11336/67507
identifier_str_mv Mayoral, Alvaro; Mejia Rosales, Sergio Javier; Mariscal, Marcelo; Pérez-Tijerina, Eduardo; José-Yacamán, Miguel; The Co-Au interface in bimetallic nanoparticles: A high resolution STEM study; Royal Society of Chemistry; Nanoscale; 2; 12; 11-2010; 2647-2651
2040-3364
2040-3372
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2010/NR/c0nr00498g
info:eu-repo/semantics/altIdentifier/doi/10.1039/c0nr00498g
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 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 13.070432

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