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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/31497
Ver los metadatos del registro completo
id |
CONICETDig_1f725dac2b890b6cdb23f2efbd604cf8 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/31497 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
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 Técnicas2025-09-29T09:45:03Zoai: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:34982025-09-29 09:45:03.666CONICET 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_ |
1844613416911634432 |
score |
13.070432 |