Glycerol oxidation reaction using PdAu/C electrocatalysts
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11581-015-1631-8 http://hdl.handle.net/11449/168311 |
Resumo: | Glycerol oxidation reactions were evaluated using PdAu/C electrocatalysts under alkaline conditions. These electrocatalysts were synthesized in different ratios (100:0, 75:25, 50:50, 25:75, and 0:100), using the borohydride reduction method. The materials were characterized with X-ray diffraction (XRD), transmission electron microscopy (TEM), and electrochemical techniques associated by in situ attenuated total reflectance Fourier transformed infrared spectroscopy (ATR-FTIR). According to the XRD diffractograms, the presence of Pd and Au (face-centered cubic (fcc)) phases and Pd-Au (fcc) alloys were detected. Cyclic voltammetry assisted by ATR-FTIR in situ and chronoamperometry experiments revealed that the addition of Au remarkably enhances the electrocatalytic activity, due to the action of bifunctional effect, with addition of the interactions of alcohoxide with hydroxylate species in gold surface, and the stability of Pd/C catalysts. Highest current density (≈4 mA mgmetal −1) was achieved for the catalyst Pd50Au50/C and Pd75Au25/C, which is two times higher than that achieved by Pd/C (2 mA mgmetal −1), demonstrating the beneficial effect of the PdAu alloy. |
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Repositório Institucional da UNESP |
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2946 |
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Glycerol oxidation reaction using PdAu/C electrocatalystsGlycerol oxidation reactionPalladium-electrocatalystPdAu alloyGlycerol oxidation reactions were evaluated using PdAu/C electrocatalysts under alkaline conditions. These electrocatalysts were synthesized in different ratios (100:0, 75:25, 50:50, 25:75, and 0:100), using the borohydride reduction method. The materials were characterized with X-ray diffraction (XRD), transmission electron microscopy (TEM), and electrochemical techniques associated by in situ attenuated total reflectance Fourier transformed infrared spectroscopy (ATR-FTIR). According to the XRD diffractograms, the presence of Pd and Au (face-centered cubic (fcc)) phases and Pd-Au (fcc) alloys were detected. Cyclic voltammetry assisted by ATR-FTIR in situ and chronoamperometry experiments revealed that the addition of Au remarkably enhances the electrocatalytic activity, due to the action of bifunctional effect, with addition of the interactions of alcohoxide with hydroxylate species in gold surface, and the stability of Pd/C catalysts. Highest current density (≈4 mA mgmetal −1) was achieved for the catalyst Pd50Au50/C and Pd75Au25/C, which is two times higher than that achieved by Pd/C (2 mA mgmetal −1), demonstrating the beneficial effect of the PdAu alloy.Biosciences Institute São Paulo State University - UNESP, Coastal CampusInstituto de Pesquisas Energéticas e Nucleares IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242 Cidade Universitária, CEP 05508-900Biosciences Institute São Paulo State University - UNESP, Coastal CampusUniversidade Estadual Paulista (Unesp)IPEN/CNEN-SPOttoni, Cristiane Angélica [UNESP]da Silva, Sirlane G.De Souza, Rodrigo F. B.Neto, Almir Oliveira2018-12-11T16:40:44Z2018-12-11T16:40:44Z2016-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1167-1175application/pdfhttp://dx.doi.org/10.1007/s11581-015-1631-8Ionics, v. 22, n. 7, p. 1167-1175, 2016.1862-07600947-7047http://hdl.handle.net/11449/16831110.1007/s11581-015-1631-82-s2.0-849552617412-s2.0-84955261741.pdf96201224557082230000-0003-4069-509XScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIonics0,557info:eu-repo/semantics/openAccess2023-12-29T06:18:48Zoai:repositorio.unesp.br:11449/168311Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-29T06:18:48Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Glycerol oxidation reaction using PdAu/C electrocatalysts |
title |
Glycerol oxidation reaction using PdAu/C electrocatalysts |
spellingShingle |
Glycerol oxidation reaction using PdAu/C electrocatalysts Ottoni, Cristiane Angélica [UNESP] Glycerol oxidation reaction Palladium-electrocatalyst PdAu alloy |
title_short |
Glycerol oxidation reaction using PdAu/C electrocatalysts |
title_full |
Glycerol oxidation reaction using PdAu/C electrocatalysts |
title_fullStr |
Glycerol oxidation reaction using PdAu/C electrocatalysts |
title_full_unstemmed |
Glycerol oxidation reaction using PdAu/C electrocatalysts |
title_sort |
Glycerol oxidation reaction using PdAu/C electrocatalysts |
author |
Ottoni, Cristiane Angélica [UNESP] |
author_facet |
Ottoni, Cristiane Angélica [UNESP] da Silva, Sirlane G. De Souza, Rodrigo F. B. Neto, Almir Oliveira |
author_role |
author |
author2 |
da Silva, Sirlane G. De Souza, Rodrigo F. B. Neto, Almir Oliveira |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) IPEN/CNEN-SP |
dc.contributor.author.fl_str_mv |
Ottoni, Cristiane Angélica [UNESP] da Silva, Sirlane G. De Souza, Rodrigo F. B. Neto, Almir Oliveira |
dc.subject.por.fl_str_mv |
Glycerol oxidation reaction Palladium-electrocatalyst PdAu alloy |
topic |
Glycerol oxidation reaction Palladium-electrocatalyst PdAu alloy |
description |
Glycerol oxidation reactions were evaluated using PdAu/C electrocatalysts under alkaline conditions. These electrocatalysts were synthesized in different ratios (100:0, 75:25, 50:50, 25:75, and 0:100), using the borohydride reduction method. The materials were characterized with X-ray diffraction (XRD), transmission electron microscopy (TEM), and electrochemical techniques associated by in situ attenuated total reflectance Fourier transformed infrared spectroscopy (ATR-FTIR). According to the XRD diffractograms, the presence of Pd and Au (face-centered cubic (fcc)) phases and Pd-Au (fcc) alloys were detected. Cyclic voltammetry assisted by ATR-FTIR in situ and chronoamperometry experiments revealed that the addition of Au remarkably enhances the electrocatalytic activity, due to the action of bifunctional effect, with addition of the interactions of alcohoxide with hydroxylate species in gold surface, and the stability of Pd/C catalysts. Highest current density (≈4 mA mgmetal −1) was achieved for the catalyst Pd50Au50/C and Pd75Au25/C, which is two times higher than that achieved by Pd/C (2 mA mgmetal −1), demonstrating the beneficial effect of the PdAu alloy. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-07-01 2018-12-11T16:40:44Z 2018-12-11T16:40:44Z |
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/10.1007/s11581-015-1631-8 Ionics, v. 22, n. 7, p. 1167-1175, 2016. 1862-0760 0947-7047 http://hdl.handle.net/11449/168311 10.1007/s11581-015-1631-8 2-s2.0-84955261741 2-s2.0-84955261741.pdf 9620122455708223 0000-0003-4069-509X |
url |
http://dx.doi.org/10.1007/s11581-015-1631-8 http://hdl.handle.net/11449/168311 |
identifier_str_mv |
Ionics, v. 22, n. 7, p. 1167-1175, 2016. 1862-0760 0947-7047 10.1007/s11581-015-1631-8 2-s2.0-84955261741 2-s2.0-84955261741.pdf 9620122455708223 0000-0003-4069-509X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ionics 0,557 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1167-1175 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_ |
1792962203429634048 |