Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ijhydene.2015.06.145 http://hdl.handle.net/11449/168308 |
Resumo: | This paper reports the results of Hydrogen Oxidation Reaction (HOR) experiments over ordered intermetallic (PtSn and PdSn) nanoparticles under CO-free and CO-covered surface conditions. The activity of PtSn toward the HOR was comparable to the activity of commercially available Pt/C. In addition, PtSn/C presented low susceptibility to CO poisoning. In the case of CO-covered surfaces, it was found that the CO was weakly adsorbed at the surface of the PtSn nanoparticles and it did not inhibit the HOR; in fact, this catalyst performed better than Pt/C under the same experimental conditions. X-Ray Absorption assays conducted in the present work proved that the ability of Sn to donate electrons to the Pt adsorption sites was crucial for the resulting intermetallic catalyst to display high activity in the HOR and low susceptibility to CO poisoning. |
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Repositório Institucional da UNESP |
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2946 |
spelling |
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidationCO poisoningElectronic effectHydrogen oxidation reactionOrdered intermetallic catalystsPtSnThis paper reports the results of Hydrogen Oxidation Reaction (HOR) experiments over ordered intermetallic (PtSn and PdSn) nanoparticles under CO-free and CO-covered surface conditions. The activity of PtSn toward the HOR was comparable to the activity of commercially available Pt/C. In addition, PtSn/C presented low susceptibility to CO poisoning. In the case of CO-covered surfaces, it was found that the CO was weakly adsorbed at the surface of the PtSn nanoparticles and it did not inhibit the HOR; in fact, this catalyst performed better than Pt/C under the same experimental conditions. X-Ray Absorption assays conducted in the present work proved that the ability of Sn to donate electrons to the Pt adsorption sites was crucial for the resulting intermetallic catalyst to display high activity in the HOR and low susceptibility to CO poisoning.Electrocatalysis Lab Chemistry Dept. UNESPIQSC USPElectrocatalysis Lab Chemistry Dept. UNESPUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Bortoloti, F. [UNESP]Garcia, A. C.Angelo, A. C.D. [UNESP]2018-12-11T16:40:43Z2018-12-11T16:40:43Z2015-09-14info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10816-10824application/pdfhttp://dx.doi.org/10.1016/j.ijhydene.2015.06.145International Journal of Hydrogen Energy, v. 40, n. 34, p. 10816-10824, 2015.0360-3199http://hdl.handle.net/11449/16830810.1016/j.ijhydene.2015.06.1452-s2.0-849551739922-s2.0-84955173992.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Hydrogen Energy1,116info:eu-repo/semantics/openAccess2023-11-08T06:13:51Zoai:repositorio.unesp.br:11449/168308Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:10:55.050066Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation |
title |
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation |
spellingShingle |
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation Bortoloti, F. [UNESP] CO poisoning Electronic effect Hydrogen oxidation reaction Ordered intermetallic catalysts PtSn |
title_short |
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation |
title_full |
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation |
title_fullStr |
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation |
title_full_unstemmed |
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation |
title_sort |
Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation |
author |
Bortoloti, F. [UNESP] |
author_facet |
Bortoloti, F. [UNESP] Garcia, A. C. Angelo, A. C.D. [UNESP] |
author_role |
author |
author2 |
Garcia, A. C. Angelo, A. C.D. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Bortoloti, F. [UNESP] Garcia, A. C. Angelo, A. C.D. [UNESP] |
dc.subject.por.fl_str_mv |
CO poisoning Electronic effect Hydrogen oxidation reaction Ordered intermetallic catalysts PtSn |
topic |
CO poisoning Electronic effect Hydrogen oxidation reaction Ordered intermetallic catalysts PtSn |
description |
This paper reports the results of Hydrogen Oxidation Reaction (HOR) experiments over ordered intermetallic (PtSn and PdSn) nanoparticles under CO-free and CO-covered surface conditions. The activity of PtSn toward the HOR was comparable to the activity of commercially available Pt/C. In addition, PtSn/C presented low susceptibility to CO poisoning. In the case of CO-covered surfaces, it was found that the CO was weakly adsorbed at the surface of the PtSn nanoparticles and it did not inhibit the HOR; in fact, this catalyst performed better than Pt/C under the same experimental conditions. X-Ray Absorption assays conducted in the present work proved that the ability of Sn to donate electrons to the Pt adsorption sites was crucial for the resulting intermetallic catalyst to display high activity in the HOR and low susceptibility to CO poisoning. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-14 2018-12-11T16:40:43Z 2018-12-11T16:40:43Z |
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.ijhydene.2015.06.145 International Journal of Hydrogen Energy, v. 40, n. 34, p. 10816-10824, 2015. 0360-3199 http://hdl.handle.net/11449/168308 10.1016/j.ijhydene.2015.06.145 2-s2.0-84955173992 2-s2.0-84955173992.pdf |
url |
http://dx.doi.org/10.1016/j.ijhydene.2015.06.145 http://hdl.handle.net/11449/168308 |
identifier_str_mv |
International Journal of Hydrogen Energy, v. 40, n. 34, p. 10816-10824, 2015. 0360-3199 10.1016/j.ijhydene.2015.06.145 2-s2.0-84955173992 2-s2.0-84955173992.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Hydrogen Energy 1,116 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
10816-10824 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_ |
1808128767833407488 |