Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects

Detalhes bibliográficos
Autor(a) principal: Alvarenga, Gabriel M. [UNESP]
Data de Publicação: 2017
Outros Autores: Coutinho Gallo, Ir� B. [UNESP], Villullas, Hebe M. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jcat.2017.02.002
http://hdl.handle.net/11449/169500
Resumo: A comparative study of activity toward ethanol oxidation was carried out for catalysts having the same loading of identical Pd nanoparticles supported on carbon-oxide hybrids containing antimony tin oxide (Sb2O5/SnO2– ATO) in different amounts (20, 30 and 40�wt.%). Enhanced catalytic activity was observed for Pd nanoparticles supported on C-ATO hybrids. X-ray absorption spectroscopy experiments carried out around the Pd L3edge evidenced an increase in the electronic occupancy of the Pd 4d band indicating an electronic transfer from the hybrid supports to the Pd particles. A strong correlation between ethanol oxidation currents and X-ray absorption data reveals the importance of electronic effects in the electrocatalysis of ethanol oxidation on Pd. In addition, FTIR data show that C-ATO hybrid supports promote a decrease in the onset potential and an increase in carbonate/CO2production.
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spelling Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effectsElectronic propertiesEthanol oxidationHybrid supportsPd nanoparticlesA comparative study of activity toward ethanol oxidation was carried out for catalysts having the same loading of identical Pd nanoparticles supported on carbon-oxide hybrids containing antimony tin oxide (Sb2O5/SnO2– ATO) in different amounts (20, 30 and 40�wt.%). Enhanced catalytic activity was observed for Pd nanoparticles supported on C-ATO hybrids. X-ray absorption spectroscopy experiments carried out around the Pd L3edge evidenced an increase in the electronic occupancy of the Pd 4d band indicating an electronic transfer from the hybrid supports to the Pd particles. A strong correlation between ethanol oxidation currents and X-ray absorption data reveals the importance of electronic effects in the electrocatalysis of ethanol oxidation on Pd. In addition, FTIR data show that C-ATO hybrid supports promote a decrease in the onset potential and an increase in carbonate/CO2production.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Estadual Paulista (UNESP) Instituto de Qu�mica AraraquaraUniversidade Estadual Paulista (UNESP) Instituto de Qu�mica AraraquaraFAPESP: 2013/50206-4FAPESP: 2014/12255-6CNPq: 407143/2013-0Universidade Estadual Paulista (Unesp)Alvarenga, Gabriel M. [UNESP]Coutinho Gallo, Ir� B. [UNESP]Villullas, Hebe M. [UNESP]2018-12-11T16:46:10Z2018-12-11T16:46:10Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-8application/pdfhttp://dx.doi.org/10.1016/j.jcat.2017.02.002Journal of Catalysis, v. 348, p. 1-8.1090-26940021-9517http://hdl.handle.net/11449/16950010.1016/j.jcat.2017.02.0022-s2.0-850139694902-s2.0-85013969490.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Catalysis2,3972,397info:eu-repo/semantics/openAccess2023-11-25T06:13:41Zoai:repositorio.unesp.br:11449/169500Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:39:57.405881Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects
title Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects
spellingShingle Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects
Alvarenga, Gabriel M. [UNESP]
Electronic properties
Ethanol oxidation
Hybrid supports
Pd nanoparticles
title_short Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects
title_full Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects
title_fullStr Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects
title_full_unstemmed Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects
title_sort Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects
author Alvarenga, Gabriel M. [UNESP]
author_facet Alvarenga, Gabriel M. [UNESP]
Coutinho Gallo, Ir� B. [UNESP]
Villullas, Hebe M. [UNESP]
author_role author
author2 Coutinho Gallo, Ir� B. [UNESP]
Villullas, Hebe M. [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Alvarenga, Gabriel M. [UNESP]
Coutinho Gallo, Ir� B. [UNESP]
Villullas, Hebe M. [UNESP]
dc.subject.por.fl_str_mv Electronic properties
Ethanol oxidation
Hybrid supports
Pd nanoparticles
topic Electronic properties
Ethanol oxidation
Hybrid supports
Pd nanoparticles
description A comparative study of activity toward ethanol oxidation was carried out for catalysts having the same loading of identical Pd nanoparticles supported on carbon-oxide hybrids containing antimony tin oxide (Sb2O5/SnO2– ATO) in different amounts (20, 30 and 40�wt.%). Enhanced catalytic activity was observed for Pd nanoparticles supported on C-ATO hybrids. X-ray absorption spectroscopy experiments carried out around the Pd L3edge evidenced an increase in the electronic occupancy of the Pd 4d band indicating an electronic transfer from the hybrid supports to the Pd particles. A strong correlation between ethanol oxidation currents and X-ray absorption data reveals the importance of electronic effects in the electrocatalysis of ethanol oxidation on Pd. In addition, FTIR data show that C-ATO hybrid supports promote a decrease in the onset potential and an increase in carbonate/CO2production.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
2018-12-11T16:46:10Z
2018-12-11T16:46:10Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.jcat.2017.02.002
Journal of Catalysis, v. 348, p. 1-8.
1090-2694
0021-9517
http://hdl.handle.net/11449/169500
10.1016/j.jcat.2017.02.002
2-s2.0-85013969490
2-s2.0-85013969490.pdf
url http://dx.doi.org/10.1016/j.jcat.2017.02.002
http://hdl.handle.net/11449/169500
identifier_str_mv Journal of Catalysis, v. 348, p. 1-8.
1090-2694
0021-9517
10.1016/j.jcat.2017.02.002
2-s2.0-85013969490
2-s2.0-85013969490.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Catalysis
2,397
2,397
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1-8
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128963625615360

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