Study of nucleation and growth mechanism of the metallic nanodumbbells

Autores
Krylova, Galyna; Giovanetti, Lisandro Jose; Requejo, Felix Gregorio; Dimitrijevic, Nada M.; Prakapenka, Alesia; Shevchenko, Elena V.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We propose a general nucleation and growth model that can explain the mechanism of the formation of CoPt 3/Au, FePt/Au, and Pt/Au nanodumbbells. Thus, we found that the nucleation event occurs as a result of reduction of Au + ions by partially oxidized surface Pt atoms. In cases when Au 3+ is used as a gold precursor, the surface of seeds should be terminated by ions (e.g., Co 2+, Pb 2+) that can reduce Au 3+ to Au + ions, which can further participate in the nucleation of gold domain. Further growth of gold domain is a result of reduction of both Au 3+ and Au + by HDA at the surface of gold nuclei. We explain the different ability of CoPt 3, Pt, and FePt seeds to serve as a nucleation center for the reduction of gold and further growth of dumbbells. We report that the efficiency and reproducibility of the formation of CoPt 3/Au, FePt/Au, and Pt/Au dumbbells can be optimized by the concentration and oxidation states of the surface ions on metallic nanocrystals used as seeds as well as by the type of the gold precursor.
Fil: Krylova, Galyna. Argonne National Laboratory; Estados Unidos
Fil: Giovanetti, Lisandro Jose. 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: Requejo, Felix Gregorio. 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: Dimitrijevic, Nada M.. Argonne National Laboratory; Estados Unidos
Fil: Prakapenka, Alesia. Argonne National Laboratory; Estados Unidos. University of Illinois at Urbana; Estados Unidos
Fil: Shevchenko, Elena V.. Argonne National Laboratory; Estados Unidos
Materia
Nanodumbbells
Xanes
Copt
Nanoparticles
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:11336/81025
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/81025
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Study of nucleation and growth mechanism of the metallic nanodumbbellsKrylova, GalynaGiovanetti, Lisandro JoseRequejo, Felix GregorioDimitrijevic, Nada M.Prakapenka, AlesiaShevchenko, Elena V.NanodumbbellsXanesCoptNanoparticleshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1We propose a general nucleation and growth model that can explain the mechanism of the formation of CoPt 3/Au, FePt/Au, and Pt/Au nanodumbbells. Thus, we found that the nucleation event occurs as a result of reduction of Au + ions by partially oxidized surface Pt atoms. In cases when Au 3+ is used as a gold precursor, the surface of seeds should be terminated by ions (e.g., Co 2+, Pb 2+) that can reduce Au 3+ to Au + ions, which can further participate in the nucleation of gold domain. Further growth of gold domain is a result of reduction of both Au 3+ and Au + by HDA at the surface of gold nuclei. We explain the different ability of CoPt 3, Pt, and FePt seeds to serve as a nucleation center for the reduction of gold and further growth of dumbbells. We report that the efficiency and reproducibility of the formation of CoPt 3/Au, FePt/Au, and Pt/Au dumbbells can be optimized by the concentration and oxidation states of the surface ions on metallic nanocrystals used as seeds as well as by the type of the gold precursor.Fil: Krylova, Galyna. Argonne National Laboratory; Estados UnidosFil: Giovanetti, Lisandro Jose. 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: Requejo, Felix Gregorio. 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: Dimitrijevic, Nada M.. Argonne National Laboratory; Estados UnidosFil: Prakapenka, Alesia. Argonne National Laboratory; Estados Unidos. University of Illinois at Urbana; Estados UnidosFil: Shevchenko, Elena V.. Argonne National Laboratory; Estados UnidosAmerican Chemical Society2012-03-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/81025Krylova, Galyna; Giovanetti, Lisandro Jose; Requejo, Felix Gregorio; Dimitrijevic, Nada M.; Prakapenka, Alesia; et al.; Study of nucleation and growth mechanism of the metallic nanodumbbells; American Chemical Society; Journal of the American Chemical Society; 134; 9; 14-3-2012; 4384-43920002-7863CONICET DigitalCONICETenginfo:eu-repo/semantics/reference/url/http://hdl.handle.net/11336/81023info:eu-repo/semantics/altIdentifier/doi/10.1021/ja211459pinfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/ja211459pinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:43:30Zoai:ri.conicet.gov.ar:11336/81025instacron: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 09:43:30.523CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Study of nucleation and growth mechanism of the metallic nanodumbbells
title Study of nucleation and growth mechanism of the metallic nanodumbbells
spellingShingle Study of nucleation and growth mechanism of the metallic nanodumbbells
Krylova, Galyna
Nanodumbbells
Xanes
Copt
Nanoparticles
title_short Study of nucleation and growth mechanism of the metallic nanodumbbells
title_full Study of nucleation and growth mechanism of the metallic nanodumbbells
title_fullStr Study of nucleation and growth mechanism of the metallic nanodumbbells
title_full_unstemmed Study of nucleation and growth mechanism of the metallic nanodumbbells
title_sort Study of nucleation and growth mechanism of the metallic nanodumbbells
dc.creator.none.fl_str_mv Krylova, Galyna
Giovanetti, Lisandro Jose
Requejo, Felix Gregorio
Dimitrijevic, Nada M.
Prakapenka, Alesia
Shevchenko, Elena V.
author Krylova, Galyna
author_facet Krylova, Galyna
Giovanetti, Lisandro Jose
Requejo, Felix Gregorio
Dimitrijevic, Nada M.
Prakapenka, Alesia
Shevchenko, Elena V.
author_role author
author2 Giovanetti, Lisandro Jose
Requejo, Felix Gregorio
Dimitrijevic, Nada M.
Prakapenka, Alesia
Shevchenko, Elena V.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Nanodumbbells
Xanes
Copt
Nanoparticles
topic Nanodumbbells
Xanes
Copt
Nanoparticles
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We propose a general nucleation and growth model that can explain the mechanism of the formation of CoPt 3/Au, FePt/Au, and Pt/Au nanodumbbells. Thus, we found that the nucleation event occurs as a result of reduction of Au + ions by partially oxidized surface Pt atoms. In cases when Au 3+ is used as a gold precursor, the surface of seeds should be terminated by ions (e.g., Co 2+, Pb 2+) that can reduce Au 3+ to Au + ions, which can further participate in the nucleation of gold domain. Further growth of gold domain is a result of reduction of both Au 3+ and Au + by HDA at the surface of gold nuclei. We explain the different ability of CoPt 3, Pt, and FePt seeds to serve as a nucleation center for the reduction of gold and further growth of dumbbells. We report that the efficiency and reproducibility of the formation of CoPt 3/Au, FePt/Au, and Pt/Au dumbbells can be optimized by the concentration and oxidation states of the surface ions on metallic nanocrystals used as seeds as well as by the type of the gold precursor.
Fil: Krylova, Galyna. Argonne National Laboratory; Estados Unidos
Fil: Giovanetti, Lisandro Jose. 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: Requejo, Felix Gregorio. 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: Dimitrijevic, Nada M.. Argonne National Laboratory; Estados Unidos
Fil: Prakapenka, Alesia. Argonne National Laboratory; Estados Unidos. University of Illinois at Urbana; Estados Unidos
Fil: Shevchenko, Elena V.. Argonne National Laboratory; Estados Unidos
description We propose a general nucleation and growth model that can explain the mechanism of the formation of CoPt 3/Au, FePt/Au, and Pt/Au nanodumbbells. Thus, we found that the nucleation event occurs as a result of reduction of Au + ions by partially oxidized surface Pt atoms. In cases when Au 3+ is used as a gold precursor, the surface of seeds should be terminated by ions (e.g., Co 2+, Pb 2+) that can reduce Au 3+ to Au + ions, which can further participate in the nucleation of gold domain. Further growth of gold domain is a result of reduction of both Au 3+ and Au + by HDA at the surface of gold nuclei. We explain the different ability of CoPt 3, Pt, and FePt seeds to serve as a nucleation center for the reduction of gold and further growth of dumbbells. We report that the efficiency and reproducibility of the formation of CoPt 3/Au, FePt/Au, and Pt/Au dumbbells can be optimized by the concentration and oxidation states of the surface ions on metallic nanocrystals used as seeds as well as by the type of the gold precursor.
publishDate 2012
dc.date.none.fl_str_mv 2012-03-14
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/11336/81025
Krylova, Galyna; Giovanetti, Lisandro Jose; Requejo, Felix Gregorio; Dimitrijevic, Nada M.; Prakapenka, Alesia; et al.; Study of nucleation and growth mechanism of the metallic nanodumbbells; American Chemical Society; Journal of the American Chemical Society; 134; 9; 14-3-2012; 4384-4392
0002-7863
CONICET Digital
CONICET
url http://hdl.handle.net/11336/81025
identifier_str_mv Krylova, Galyna; Giovanetti, Lisandro Jose; Requejo, Felix Gregorio; Dimitrijevic, Nada M.; Prakapenka, Alesia; et al.; Study of nucleation and growth mechanism of the metallic nanodumbbells; American Chemical Society; Journal of the American Chemical Society; 134; 9; 14-3-2012; 4384-4392
0002-7863
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/reference/url/http://hdl.handle.net/11336/81023
info:eu-repo/semantics/altIdentifier/doi/10.1021/ja211459p
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/ja211459p
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 American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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
_version_ 1842268606616829952
score 13.13397

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