Pd/Ti electrocatalyst in technological significance reactions

Autores
Aguirre, María del Carmen; Fuentes, A. S.; Filippin, A. F.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
New materials operating as future electrocatalysts into fuel cells or in environmental remediation processes are continuously under research. Here we studied palladium modified electrodes, such as Pd/Ti and Pd/GC (glassy carbon), which are electrochemically built and used in chromate detection, in oxygen reduction and alcohols oxidation reaction. The palladium material electrodeposited at constant potential was characterized by X-ray diffraction, and scanning electron microscopy. The response of Pd/Ti nanoelectrodes, by oxygen reduction was observed in alkaline and acid supporting electrolytes. The diffusion coefficient of 2 10-5 cm2/s with a transference of 4e -in 0.1M H2SO4 solution was calculated. A higher coefficient value in 0.05 M NaOH was evaluated, because Ti substrate is also active in oxygen reduction in alkaline media. The reduction of Cr(VI) with Pd/Ti electrode proceeds at +0.58 V vs Ag/AgCl in H2SO4 0.1M, with a diffusion coefficient of 2.210-5 0.01 cm2/s and a linear range between 0.019 -0.69 mM Cr(VI). The lowest sensitivity 0.5 M Cr(VI) was determined with Pd/Ti electrode in the range permissible by drinking water of The oxidation of alcohol molecules in alkaline environment showed by Tafel curves, the activity order on Pd/Ti electrocatalyts is ethanoln-propanol >ethylene glycol. The calibration curve obtained by anodic peak current density of cyclic voltammetries upon an increasing alcohol concentration (3 to 90 mM alcohol) in NaOH 0.05 M, permitted to evaluate an activity of PdTi(+0.1V)PdTi(-0.3V)>PdTi(-0.9V). The performance of Pd/Ti electrocatalysts was better when compared with a modified Pd/GC electrocatalyst, in the studied reactions.
Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Física "Enrique Gaviola"; Argentina
Fil: Fuentes, A. S.. Universidad Nacional de Catamarca. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Filippin, A. F.. Universidad Nacional de Catamarca. Facultad de Ciencias Exactas y Naturales; Argentina
Materia
Pd/Ti ELECTROCATALYST
ELECTROREDUCTION
ELECTROOXIDATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11569
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/11569
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Pd/Ti electrocatalyst in technological significance reactionsAguirre, María del CarmenFuentes, A. S.Filippin, A. F.Pd/Ti ELECTROCATALYSTELECTROREDUCTIONELECTROOXIDATIONhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2New materials operating as future electrocatalysts into fuel cells or in environmental remediation processes are continuously under research. Here we studied palladium modified electrodes, such as Pd/Ti and Pd/GC (glassy carbon), which are electrochemically built and used in chromate detection, in oxygen reduction and alcohols oxidation reaction. The palladium material electrodeposited at constant potential was characterized by X-ray diffraction, and scanning electron microscopy. The response of Pd/Ti nanoelectrodes, by oxygen reduction was observed in alkaline and acid supporting electrolytes. The diffusion coefficient of 2 10-5 cm2/s with a transference of 4e -in 0.1M H2SO4 solution was calculated. A higher coefficient value in 0.05 M NaOH was evaluated, because Ti substrate is also active in oxygen reduction in alkaline media. The reduction of Cr(VI) with Pd/Ti electrode proceeds at +0.58 V vs Ag/AgCl in H2SO4 0.1M, with a diffusion coefficient of 2.210-5 0.01 cm2/s and a linear range between 0.019 -0.69 mM Cr(VI). The lowest sensitivity 0.5 M Cr(VI) was determined with Pd/Ti electrode in the range permissible by drinking water of The oxidation of alcohol molecules in alkaline environment showed by Tafel curves, the activity order on Pd/Ti electrocatalyts is ethanoln-propanol >ethylene glycol. The calibration curve obtained by anodic peak current density of cyclic voltammetries upon an increasing alcohol concentration (3 to 90 mM alcohol) in NaOH 0.05 M, permitted to evaluate an activity of PdTi(+0.1V)PdTi(-0.3V)>PdTi(-0.9V). The performance of Pd/Ti electrocatalysts was better when compared with a modified Pd/GC electrocatalyst, in the studied reactions.Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Física "Enrique Gaviola"; ArgentinaFil: Fuentes, A. S.. Universidad Nacional de Catamarca. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Filippin, A. F.. Universidad Nacional de Catamarca. Facultad de Ciencias Exactas y Naturales; ArgentinaElsevier2015-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11569Aguirre, María del Carmen; Fuentes, A. S.; Filippin, A. F.; Pd/Ti electrocatalyst in technological significance reactions; Elsevier; Procedia Materials Science; 9; 8-2015; 3-122211-8128enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S2211812815000036info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mspro.2015.04.002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:03:06Zoai:ri.conicet.gov.ar:11336/11569instacron: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 10:03:07.128CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Pd/Ti electrocatalyst in technological significance reactions
title Pd/Ti electrocatalyst in technological significance reactions
spellingShingle Pd/Ti electrocatalyst in technological significance reactions
Aguirre, María del Carmen
Pd/Ti ELECTROCATALYST
ELECTROREDUCTION
ELECTROOXIDATION
title_short Pd/Ti electrocatalyst in technological significance reactions
title_full Pd/Ti electrocatalyst in technological significance reactions
title_fullStr Pd/Ti electrocatalyst in technological significance reactions
title_full_unstemmed Pd/Ti electrocatalyst in technological significance reactions
title_sort Pd/Ti electrocatalyst in technological significance reactions
dc.creator.none.fl_str_mv Aguirre, María del Carmen
Fuentes, A. S.
Filippin, A. F.
author Aguirre, María del Carmen
author_facet Aguirre, María del Carmen
Fuentes, A. S.
Filippin, A. F.
author_role author
author2 Fuentes, A. S.
Filippin, A. F.
author2_role author
author
dc.subject.none.fl_str_mv Pd/Ti ELECTROCATALYST
ELECTROREDUCTION
ELECTROOXIDATION
topic Pd/Ti ELECTROCATALYST
ELECTROREDUCTION
ELECTROOXIDATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv New materials operating as future electrocatalysts into fuel cells or in environmental remediation processes are continuously under research. Here we studied palladium modified electrodes, such as Pd/Ti and Pd/GC (glassy carbon), which are electrochemically built and used in chromate detection, in oxygen reduction and alcohols oxidation reaction. The palladium material electrodeposited at constant potential was characterized by X-ray diffraction, and scanning electron microscopy. The response of Pd/Ti nanoelectrodes, by oxygen reduction was observed in alkaline and acid supporting electrolytes. The diffusion coefficient of 2 10-5 cm2/s with a transference of 4e -in 0.1M H2SO4 solution was calculated. A higher coefficient value in 0.05 M NaOH was evaluated, because Ti substrate is also active in oxygen reduction in alkaline media. The reduction of Cr(VI) with Pd/Ti electrode proceeds at +0.58 V vs Ag/AgCl in H2SO4 0.1M, with a diffusion coefficient of 2.210-5 0.01 cm2/s and a linear range between 0.019 -0.69 mM Cr(VI). The lowest sensitivity 0.5 M Cr(VI) was determined with Pd/Ti electrode in the range permissible by drinking water of The oxidation of alcohol molecules in alkaline environment showed by Tafel curves, the activity order on Pd/Ti electrocatalyts is ethanoln-propanol >ethylene glycol. The calibration curve obtained by anodic peak current density of cyclic voltammetries upon an increasing alcohol concentration (3 to 90 mM alcohol) in NaOH 0.05 M, permitted to evaluate an activity of PdTi(+0.1V)PdTi(-0.3V)>PdTi(-0.9V). The performance of Pd/Ti electrocatalysts was better when compared with a modified Pd/GC electrocatalyst, in the studied reactions.
Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Física "Enrique Gaviola"; Argentina
Fil: Fuentes, A. S.. Universidad Nacional de Catamarca. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Filippin, A. F.. Universidad Nacional de Catamarca. Facultad de Ciencias Exactas y Naturales; Argentina
description New materials operating as future electrocatalysts into fuel cells or in environmental remediation processes are continuously under research. Here we studied palladium modified electrodes, such as Pd/Ti and Pd/GC (glassy carbon), which are electrochemically built and used in chromate detection, in oxygen reduction and alcohols oxidation reaction. The palladium material electrodeposited at constant potential was characterized by X-ray diffraction, and scanning electron microscopy. The response of Pd/Ti nanoelectrodes, by oxygen reduction was observed in alkaline and acid supporting electrolytes. The diffusion coefficient of 2 10-5 cm2/s with a transference of 4e -in 0.1M H2SO4 solution was calculated. A higher coefficient value in 0.05 M NaOH was evaluated, because Ti substrate is also active in oxygen reduction in alkaline media. The reduction of Cr(VI) with Pd/Ti electrode proceeds at +0.58 V vs Ag/AgCl in H2SO4 0.1M, with a diffusion coefficient of 2.210-5 0.01 cm2/s and a linear range between 0.019 -0.69 mM Cr(VI). The lowest sensitivity 0.5 M Cr(VI) was determined with Pd/Ti electrode in the range permissible by drinking water of The oxidation of alcohol molecules in alkaline environment showed by Tafel curves, the activity order on Pd/Ti electrocatalyts is ethanoln-propanol >ethylene glycol. The calibration curve obtained by anodic peak current density of cyclic voltammetries upon an increasing alcohol concentration (3 to 90 mM alcohol) in NaOH 0.05 M, permitted to evaluate an activity of PdTi(+0.1V)PdTi(-0.3V)>PdTi(-0.9V). The performance of Pd/Ti electrocatalysts was better when compared with a modified Pd/GC electrocatalyst, in the studied reactions.
publishDate 2015
dc.date.none.fl_str_mv 2015-08
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/11336/11569
Aguirre, María del Carmen; Fuentes, A. S.; Filippin, A. F.; Pd/Ti electrocatalyst in technological significance reactions; Elsevier; Procedia Materials Science; 9; 8-2015; 3-12
2211-8128
url http://hdl.handle.net/11336/11569
identifier_str_mv Aguirre, María del Carmen; Fuentes, A. S.; Filippin, A. F.; Pd/Ti electrocatalyst in technological significance reactions; Elsevier; Procedia Materials Science; 9; 8-2015; 3-12
2211-8128
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S2211812815000036
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mspro.2015.04.002
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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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
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score 13.070432

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