Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO

Autores
Gonçalves, Renato V.; Wojcieszak, Robert; Uberman, Paula Marina; Teixeira, Sergio R.; Rossi, Liane M.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Freestanding Ta2O5nanotubes were prepared by an anodizing method. As-anodized amorphousnanotubes were calcined at high temperature to obtain a crystalline phase. All materials were studied bymeans of BET analysis, XRD, TEM, SEM, XPS, and FTIR and were evaluated in the catalytic oxidation ofCO. An XPS study confirmed the formation of different tantalum surface species after high temperaturetreatment of amorphous Ta2O5nanotubes. Calcination at 8001C generated Ta4+while highertemperature (10001C) treatment led to the formation of Ta3+species. These materials also showedsignificant differences in catalytic activity. Higher activity was observed for samples calcined at 8001Cthan at 10001C, suggesting that Ta4+species are active sites for CO oxidation.
Fil: Gonçalves, Renato V.. Universidade de Sao Paulo; Brasil
Fil: Wojcieszak, Robert. Universidade de Sao Paulo; Brasil
Fil: Uberman, Paula Marina. Universidade de Sao Paulo; Brasil. 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: Teixeira, Sergio R.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Rossi, Liane M.. Universidade de Sao Paulo; Brasil
Materia
Co Oxidation
Active Surface Species
Ta2o5 Nanotube
Xps Studies
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:11336/31497
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of COGonçalves, Renato V.Wojcieszak, RobertUberman, Paula MarinaTeixeira, Sergio R.Rossi, Liane M.Co OxidationActive Surface SpeciesTa2o5 NanotubeXps Studieshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Freestanding Ta2O5nanotubes were prepared by an anodizing method. As-anodized amorphousnanotubes were calcined at high temperature to obtain a crystalline phase. All materials were studied bymeans of BET analysis, XRD, TEM, SEM, XPS, and FTIR and were evaluated in the catalytic oxidation ofCO. An XPS study confirmed the formation of different tantalum surface species after high temperaturetreatment of amorphous Ta2O5nanotubes. Calcination at 8001C generated Ta4+while highertemperature (10001C) treatment led to the formation of Ta3+species. These materials also showedsignificant differences in catalytic activity. Higher activity was observed for samples calcined at 8001Cthan at 10001C, suggesting that Ta4+species are active sites for CO oxidation.Fil: Gonçalves, Renato V.. Universidade de Sao Paulo; BrasilFil: Wojcieszak, Robert. Universidade de Sao Paulo; BrasilFil: Uberman, Paula Marina. Universidade de Sao Paulo; Brasil. 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: Teixeira, Sergio R.. Universidade Federal do Rio Grande do Sul; BrasilFil: Rossi, Liane M.. Universidade de Sao Paulo; BrasilRoyal Society of Chemistry2014-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31497Gonçalves, Renato V.; Wojcieszak, Robert; Uberman, Paula Marina; Teixeira, Sergio R.; Rossi, Liane M.; Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 16; 12; 1-2014; 5755-57621463-9076CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/c3cp54887binfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/CP/c3cp54887binfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:13:56Zoai:ri.conicet.gov.ar:11336/31497instacron: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 11:13:56.593CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO
title Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO
spellingShingle Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO
Gonçalves, Renato V.
Co Oxidation
Active Surface Species
Ta2o5 Nanotube
Xps Studies
title_short Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO
title_full Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO
title_fullStr Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO
title_full_unstemmed Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO
title_sort Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO
dc.creator.none.fl_str_mv Gonçalves, Renato V.
Wojcieszak, Robert
Uberman, Paula Marina
Teixeira, Sergio R.
Rossi, Liane M.
author Gonçalves, Renato V.
author_facet Gonçalves, Renato V.
Wojcieszak, Robert
Uberman, Paula Marina
Teixeira, Sergio R.
Rossi, Liane M.
author_role author
author2 Wojcieszak, Robert
Uberman, Paula Marina
Teixeira, Sergio R.
Rossi, Liane M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Co Oxidation
Active Surface Species
Ta2o5 Nanotube
Xps Studies
topic Co Oxidation
Active Surface Species
Ta2o5 Nanotube
Xps Studies
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Freestanding Ta2O5nanotubes were prepared by an anodizing method. As-anodized amorphousnanotubes were calcined at high temperature to obtain a crystalline phase. All materials were studied bymeans of BET analysis, XRD, TEM, SEM, XPS, and FTIR and were evaluated in the catalytic oxidation ofCO. An XPS study confirmed the formation of different tantalum surface species after high temperaturetreatment of amorphous Ta2O5nanotubes. Calcination at 8001C generated Ta4+while highertemperature (10001C) treatment led to the formation of Ta3+species. These materials also showedsignificant differences in catalytic activity. Higher activity was observed for samples calcined at 8001Cthan at 10001C, suggesting that Ta4+species are active sites for CO oxidation.
Fil: Gonçalves, Renato V.. Universidade de Sao Paulo; Brasil
Fil: Wojcieszak, Robert. Universidade de Sao Paulo; Brasil
Fil: Uberman, Paula Marina. Universidade de Sao Paulo; Brasil. 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: Teixeira, Sergio R.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Rossi, Liane M.. Universidade de Sao Paulo; Brasil
description Freestanding Ta2O5nanotubes were prepared by an anodizing method. As-anodized amorphousnanotubes were calcined at high temperature to obtain a crystalline phase. All materials were studied bymeans of BET analysis, XRD, TEM, SEM, XPS, and FTIR and were evaluated in the catalytic oxidation ofCO. An XPS study confirmed the formation of different tantalum surface species after high temperaturetreatment of amorphous Ta2O5nanotubes. Calcination at 8001C generated Ta4+while highertemperature (10001C) treatment led to the formation of Ta3+species. These materials also showedsignificant differences in catalytic activity. Higher activity was observed for samples calcined at 8001Cthan at 10001C, suggesting that Ta4+species are active sites for CO oxidation.
publishDate 2014
dc.date.none.fl_str_mv 2014-01
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/11336/31497
Gonçalves, Renato V.; Wojcieszak, Robert; Uberman, Paula Marina; Teixeira, Sergio R.; Rossi, Liane M.; Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 16; 12; 1-2014; 5755-5762
1463-9076
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31497
identifier_str_mv Gonçalves, Renato V.; Wojcieszak, Robert; Uberman, Paula Marina; Teixeira, Sergio R.; Rossi, Liane M.; Insights into the active surface species formed onTa2O5nanotubes in the catalytic oxidation of CO; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 16; 12; 1-2014; 5755-5762
1463-9076
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1039/c3cp54887b
info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/CP/c3cp54887b
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
_version_ 1846781554188091392
score 12.982451

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