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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/5226
Ver los metadatos del registro completo
id |
CONICETDig_2b21d973f30008572a9206297961485c |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/5226 |
network_acronym_str |
CONICETDig |
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 |