Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes

Autores
Rafti, Matias; Brunsen, Annette; Fuertes, Maria Cecilia; Azzaroni, Omar; Soler Illia, Galo Juan de Avila Arturo
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Platinum nanoparticles of 3 nm diameter were included in mesoporous silica thin films by controlling the mesopore surface charge with a short polymer brush. This metal-polymer-mesopore nanocomposite presents high catalytic activity toward ammonia oxidation at low temperatures with 4.5% weight platinum loading. An anomalous partial selectivity toward nitrous oxide is observed for the first time, which can be traced back to the synergy of the particles and modified surface. This effect opens a path toward the design of nanocomposite catalysts with highly controlled environments, in which the size- and function-controlled cavities can be tuned in order to lower the reaction barriers.
Fil: Rafti, Matias. 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: Brunsen, Annette. Universitat Technische Darmstadt; Alemania. Comisión Nacional de Energía Atómica. Gerencia del área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina
Fil: Fuertes, Maria Cecilia. Comisión Nacional de Energía Atómica. Gerencia del área de Seguridad Nuclear y Ambiente. Gerencia de Química (cac); Argentina. Universidad Nacional de San Martin. Instituto Sabato; Argentina
Fil: Azzaroni, Omar. 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: Soler Illia, Galo Juan de Avila Arturo. Comisión Nacional de Energía Atómica. Gerencia del área de Seguridad Nuclear y Ambiente. Gerencia de Química (cac); Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Quimica Fisica; Argentina
Materia
Polyelectrolyte Brushes
Pt Nanoparticles
Heterogeneous Catalysis
Ammonia Oxidation
Gold Catalysis
Moseporous Films
Polymer Brushes
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:11336/4768
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/4768
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte BrushesRafti, MatiasBrunsen, AnnetteFuertes, Maria CeciliaAzzaroni, OmarSoler Illia, Galo Juan de Avila ArturoPolyelectrolyte BrushesPt NanoparticlesHeterogeneous CatalysisAmmonia OxidationGold CatalysisMoseporous FilmsPolymer Brusheshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Platinum nanoparticles of 3 nm diameter were included in mesoporous silica thin films by controlling the mesopore surface charge with a short polymer brush. This metal-polymer-mesopore nanocomposite presents high catalytic activity toward ammonia oxidation at low temperatures with 4.5% weight platinum loading. An anomalous partial selectivity toward nitrous oxide is observed for the first time, which can be traced back to the synergy of the particles and modified surface. This effect opens a path toward the design of nanocomposite catalysts with highly controlled environments, in which the size- and function-controlled cavities can be tuned in order to lower the reaction barriers.Fil: Rafti, Matias. 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: Brunsen, Annette. Universitat Technische Darmstadt; Alemania. Comisión Nacional de Energía Atómica. Gerencia del área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); ArgentinaFil: Fuertes, Maria Cecilia. Comisión Nacional de Energía Atómica. Gerencia del área de Seguridad Nuclear y Ambiente. Gerencia de Química (cac); Argentina. Universidad Nacional de San Martin. Instituto Sabato; ArgentinaFil: Azzaroni, Omar. 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: Soler Illia, Galo Juan de Avila Arturo. Comisión Nacional de Energía Atómica. Gerencia del área de Seguridad Nuclear y Ambiente. Gerencia de Química (cac); Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Quimica Fisica; ArgentinaAmerican Chemical Society2013-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4768Rafti, Matias; Brunsen, Annette; Fuertes, Maria Cecilia; Azzaroni, Omar; Soler Illia, Galo Juan de Avila Arturo; Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes; American Chemical Society; Acs Applied Materials & Interfaces; 5; 18; 9-2013; 8833-88401944-8244enginfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/am403836finfo:eu-repo/semantics/altIdentifier/doi/dx.doi.org/10.1021/am403836finfo:eu-repo/semantics/altIdentifier/issn/1944-8244info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:58:44Zoai:ri.conicet.gov.ar:11336/4768instacron: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 09:58:45.041CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes
title Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes
spellingShingle Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes
Rafti, Matias
Polyelectrolyte Brushes
Pt Nanoparticles
Heterogeneous Catalysis
Ammonia Oxidation
Gold Catalysis
Moseporous Films
Polymer Brushes
title_short Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes
title_full Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes
title_fullStr Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes
title_full_unstemmed Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes
title_sort Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes
dc.creator.none.fl_str_mv Rafti, Matias
Brunsen, Annette
Fuertes, Maria Cecilia
Azzaroni, Omar
Soler Illia, Galo Juan de Avila Arturo
author Rafti, Matias
author_facet Rafti, Matias
Brunsen, Annette
Fuertes, Maria Cecilia
Azzaroni, Omar
Soler Illia, Galo Juan de Avila Arturo
author_role author
author2 Brunsen, Annette
Fuertes, Maria Cecilia
Azzaroni, Omar
Soler Illia, Galo Juan de Avila Arturo
author2_role author
author
author
author
dc.subject.none.fl_str_mv Polyelectrolyte Brushes
Pt Nanoparticles
Heterogeneous Catalysis
Ammonia Oxidation
Gold Catalysis
Moseporous Films
Polymer Brushes
topic Polyelectrolyte Brushes
Pt Nanoparticles
Heterogeneous Catalysis
Ammonia Oxidation
Gold Catalysis
Moseporous Films
Polymer Brushes
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Platinum nanoparticles of 3 nm diameter were included in mesoporous silica thin films by controlling the mesopore surface charge with a short polymer brush. This metal-polymer-mesopore nanocomposite presents high catalytic activity toward ammonia oxidation at low temperatures with 4.5% weight platinum loading. An anomalous partial selectivity toward nitrous oxide is observed for the first time, which can be traced back to the synergy of the particles and modified surface. This effect opens a path toward the design of nanocomposite catalysts with highly controlled environments, in which the size- and function-controlled cavities can be tuned in order to lower the reaction barriers.
Fil: Rafti, Matias. 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: Brunsen, Annette. Universitat Technische Darmstadt; Alemania. Comisión Nacional de Energía Atómica. Gerencia del área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina
Fil: Fuertes, Maria Cecilia. Comisión Nacional de Energía Atómica. Gerencia del área de Seguridad Nuclear y Ambiente. Gerencia de Química (cac); Argentina. Universidad Nacional de San Martin. Instituto Sabato; Argentina
Fil: Azzaroni, Omar. 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: Soler Illia, Galo Juan de Avila Arturo. Comisión Nacional de Energía Atómica. Gerencia del área de Seguridad Nuclear y Ambiente. Gerencia de Química (cac); Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Quimica Fisica; Argentina
description Platinum nanoparticles of 3 nm diameter were included in mesoporous silica thin films by controlling the mesopore surface charge with a short polymer brush. This metal-polymer-mesopore nanocomposite presents high catalytic activity toward ammonia oxidation at low temperatures with 4.5% weight platinum loading. An anomalous partial selectivity toward nitrous oxide is observed for the first time, which can be traced back to the synergy of the particles and modified surface. This effect opens a path toward the design of nanocomposite catalysts with highly controlled environments, in which the size- and function-controlled cavities can be tuned in order to lower the reaction barriers.
publishDate 2013
dc.date.none.fl_str_mv 2013-09
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/11336/4768
Rafti, Matias; Brunsen, Annette; Fuertes, Maria Cecilia; Azzaroni, Omar; Soler Illia, Galo Juan de Avila Arturo; Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes; American Chemical Society; Acs Applied Materials & Interfaces; 5; 18; 9-2013; 8833-8840
1944-8244
url http://hdl.handle.net/11336/4768
identifier_str_mv Rafti, Matias; Brunsen, Annette; Fuertes, Maria Cecilia; Azzaroni, Omar; Soler Illia, Galo Juan de Avila Arturo; Heterogeneous Catalytic Activity of Platinum Nanoparticles Hosted in Mesoporous Silica Thin Films Modified with Polyelectrolyte Brushes; American Chemical Society; Acs Applied Materials & Interfaces; 5; 18; 9-2013; 8833-8840
1944-8244
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/am403836f
info:eu-repo/semantics/altIdentifier/doi/dx.doi.org/10.1021/am403836f
info:eu-repo/semantics/altIdentifier/issn/1944-8244
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
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
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score 13.070432

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