Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica

Autores
Giovanetti, Lisandro Jose; Ramallo Lopez, Jose Martin; Foxe, Michael; Jones, Louis C.; Koebel, Matthias M.; Somorjai, Gabor A.; Craievich, Aldo F.; Salmeron, Miquel B.; Requejo, Felix Gregorio
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Polyvinylpyrollidone (PVP)-capped platinum nanoparticles (NPs) are found to change shape from spherical to flat when deposited on mesoporous silica substrates (SBA-15). Transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), and extended X-ray absorption fine structure (EXAFS) analyses are used in these studies. The SAXS results indicate that, after deposition, the 2 nm NPs have an average gyration radius 22% larger than in solution, while the EXAFS measurements indicate a decrease in first neighbor co-ordination number from 9.3 to 7.4. The deformation of these small capped NPs is attributed to interactions with the surface of the SBA-15 support, as evidenced by X-ray absorption near-edge structure (XANES).
Fil: Giovanetti, Lisandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Ramallo Lopez, Jose Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Foxe, Michael . Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Jones, Louis C.. Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Koebel, Matthias M. . Swiss Federal Laboratories for Materials Science and Technology; Suiza
Fil: Somorjai, Gabor A. . Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Craievich, Aldo F. . University of Sao Paulo.Institute of Physics; Brasil
Fil: Salmeron, Miquel B. . Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Requejo, Felix Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Materia
Nanoparticles
Xafs
Saxs
Nanothermodynamics
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:11336/5226
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous SilicaGiovanetti, Lisandro JoseRamallo Lopez, Jose MartinFoxe, Michael Jones, Louis C.Koebel, Matthias M. Somorjai, Gabor A. Craievich, Aldo F. Salmeron, Miquel B. Requejo, Felix GregorioNanoparticlesXafsSaxsNanothermodynamicshttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Polyvinylpyrollidone (PVP)-capped platinum nanoparticles (NPs) are found to change shape from spherical to flat when deposited on mesoporous silica substrates (SBA-15). Transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), and extended X-ray absorption fine structure (EXAFS) analyses are used in these studies. The SAXS results indicate that, after deposition, the 2 nm NPs have an average gyration radius 22% larger than in solution, while the EXAFS measurements indicate a decrease in first neighbor co-ordination number from 9.3 to 7.4. The deformation of these small capped NPs is attributed to interactions with the surface of the SBA-15 support, as evidenced by X-ray absorption near-edge structure (XANES).Fil: Giovanetti, Lisandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Ramallo Lopez, Jose Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Foxe, Michael . Lawrence Berkeley National Laboratory; Estados UnidosFil: Jones, Louis C.. Lawrence Berkeley National Laboratory; Estados UnidosFil: Koebel, Matthias M. . Swiss Federal Laboratories for Materials Science and Technology; SuizaFil: Somorjai, Gabor A. . Lawrence Berkeley National Laboratory; Estados UnidosFil: Craievich, Aldo F. . University of Sao Paulo.Institute of Physics; BrasilFil: Salmeron, Miquel B. . Lawrence Berkeley National Laboratory; Estados UnidosFil: Requejo, Felix Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaWiley2012-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5226Giovanetti, Lisandro Jose; Ramallo Lopez, Jose Martin; Foxe, Michael ; Jones, Louis C.; Koebel, Matthias M. ; et al.; Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica; Wiley; Small; 8; 3; 1-2012; 468-4731613-6810enginfo:eu-repo/semantics/altIdentifier/pmid/22213635info:eu-repo/semantics/altIdentifier/doi/10.1002/smll.201101293info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/wol1/doi/10.1002/smll.201101293/abstractinfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:22:14Zoai:ri.conicet.gov.ar:11336/5226instacron: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:34982025-10-22 11:22:14.576CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica
title Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica
spellingShingle Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica
Giovanetti, Lisandro Jose
Nanoparticles
Xafs
Saxs
Nanothermodynamics
title_short Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica
title_full Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica
title_fullStr Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica
title_full_unstemmed Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica
title_sort Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica
dc.creator.none.fl_str_mv Giovanetti, Lisandro Jose
Ramallo Lopez, Jose Martin
Foxe, Michael
Jones, Louis C.
Koebel, Matthias M.
Somorjai, Gabor A.
Craievich, Aldo F.
Salmeron, Miquel B.
Requejo, Felix Gregorio
author Giovanetti, Lisandro Jose
author_facet Giovanetti, Lisandro Jose
Ramallo Lopez, Jose Martin
Foxe, Michael
Jones, Louis C.
Koebel, Matthias M.
Somorjai, Gabor A.
Craievich, Aldo F.
Salmeron, Miquel B.
Requejo, Felix Gregorio
author_role author
author2 Ramallo Lopez, Jose Martin
Foxe, Michael
Jones, Louis C.
Koebel, Matthias M.
Somorjai, Gabor A.
Craievich, Aldo F.
Salmeron, Miquel B.
Requejo, Felix Gregorio
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Nanoparticles
Xafs
Saxs
Nanothermodynamics
topic Nanoparticles
Xafs
Saxs
Nanothermodynamics
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Polyvinylpyrollidone (PVP)-capped platinum nanoparticles (NPs) are found to change shape from spherical to flat when deposited on mesoporous silica substrates (SBA-15). Transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), and extended X-ray absorption fine structure (EXAFS) analyses are used in these studies. The SAXS results indicate that, after deposition, the 2 nm NPs have an average gyration radius 22% larger than in solution, while the EXAFS measurements indicate a decrease in first neighbor co-ordination number from 9.3 to 7.4. The deformation of these small capped NPs is attributed to interactions with the surface of the SBA-15 support, as evidenced by X-ray absorption near-edge structure (XANES).
Fil: Giovanetti, Lisandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Ramallo Lopez, Jose Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Foxe, Michael . Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Jones, Louis C.. Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Koebel, Matthias M. . Swiss Federal Laboratories for Materials Science and Technology; Suiza
Fil: Somorjai, Gabor A. . Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Craievich, Aldo F. . University of Sao Paulo.Institute of Physics; Brasil
Fil: Salmeron, Miquel B. . Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Requejo, Felix Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
description Polyvinylpyrollidone (PVP)-capped platinum nanoparticles (NPs) are found to change shape from spherical to flat when deposited on mesoporous silica substrates (SBA-15). Transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), and extended X-ray absorption fine structure (EXAFS) analyses are used in these studies. The SAXS results indicate that, after deposition, the 2 nm NPs have an average gyration radius 22% larger than in solution, while the EXAFS measurements indicate a decrease in first neighbor co-ordination number from 9.3 to 7.4. The deformation of these small capped NPs is attributed to interactions with the surface of the SBA-15 support, as evidenced by X-ray absorption near-edge structure (XANES).
publishDate 2012
dc.date.none.fl_str_mv 2012-01
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/11336/5226
Giovanetti, Lisandro Jose; Ramallo Lopez, Jose Martin; Foxe, Michael ; Jones, Louis C.; Koebel, Matthias M. ; et al.; Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica; Wiley; Small; 8; 3; 1-2012; 468-473
1613-6810
url http://hdl.handle.net/11336/5226
identifier_str_mv Giovanetti, Lisandro Jose; Ramallo Lopez, Jose Martin; Foxe, Michael ; Jones, Louis C.; Koebel, Matthias M. ; et al.; Shape Changes of Pt Nanoparticles Induced by Deposition on Mesoporous Silica; Wiley; Small; 8; 3; 1-2012; 468-473
1613-6810
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/pmid/22213635
info:eu-repo/semantics/altIdentifier/doi/10.1002/smll.201101293
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/wol1/doi/10.1002/smll.201101293/abstract
info:eu-repo/semantics/altIdentifier/doi/
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 Wiley
publisher.none.fl_str_mv Wiley
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_ 1846781737138388992
score 12.982451

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