Preparation and evaluation of carbon supported catalysts for ethanol oxidation

Supported PtSnIr/C, PtSn/C, and IrSn/C catalysts with potential application in a direct alcohol fuel cell were prepared by chemical reduction employing Pechini methodology. The catalyst particles were characterized by high-resolution transmission electron microscopy, energy-dispersive X-ray spectros...

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Autores principales: Bonesi, Alejandro, Asteazaran, Mariano, Moreno, Mario, Bengio, Silvina, Zampieri, Guillermo, Triaca, Walter, Castro Luna, Ana
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Springer 2017
Materias:
platinum; iridium; tin; ethanol; DEFC; nanoparticles; electrochemical impedance spectroscopy
Acceso en línea:http://hdl.handle.net/20.500.12272/2629
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-2629
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic platinum; iridium; tin; ethanol; DEFC; nanoparticles; electrochemical impedance spectroscopy
spellingShingle platinum; iridium; tin; ethanol; DEFC; nanoparticles; electrochemical impedance spectroscopy
Bonesi, Alejandro
Asteazaran, Mariano
Moreno, Mario
Bengio, Silvina
Zampieri, Guillermo
Triaca, Walter
Castro Luna, Ana
Preparation and evaluation of carbon supported catalysts for ethanol oxidation
topic_facet platinum; iridium; tin; ethanol; DEFC; nanoparticles; electrochemical impedance spectroscopy
description Supported PtSnIr/C, PtSn/C, and IrSn/C catalysts with potential application in a direct alcohol fuel cell were prepared by chemical reduction employing Pechini methodology. The catalyst particles were characterized by high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy (XPS). Linear sweep voltammetry (LV), chronoamperometry, and electrochemical impedance spectroscopy (EIS) measurements were performed by using a glassy carbon working electrode covered with the catalyst in a 1 M ethanol+0.5 M H2SO4 solution at 60 °C. It was demonstrated through XPS that PtSnIr/C and IrSn/C contain both IrO2 and SnO2. LV and chronoamperometry show a better catalytic behavior for ethanol oxidation on PtSnIr/C in the low-potential region and the improvement is attributed to the presence of both Sn and Ir oxides. The EIS accurately established that PtSnIr/C improved ethanol oxidation at lower potentials than PtSn/C.
format Artículo
publishedVersion
Artículo
author Bonesi, Alejandro
Asteazaran, Mariano
Moreno, Mario
Bengio, Silvina
Zampieri, Guillermo
Triaca, Walter
Castro Luna, Ana
author_facet Bonesi, Alejandro
Asteazaran, Mariano
Moreno, Mario
Bengio, Silvina
Zampieri, Guillermo
Triaca, Walter
Castro Luna, Ana
author_sort Bonesi, Alejandro
title Preparation and evaluation of carbon supported catalysts for ethanol oxidation
title_short Preparation and evaluation of carbon supported catalysts for ethanol oxidation
title_full Preparation and evaluation of carbon supported catalysts for ethanol oxidation
title_fullStr Preparation and evaluation of carbon supported catalysts for ethanol oxidation
title_full_unstemmed Preparation and evaluation of carbon supported catalysts for ethanol oxidation
title_sort preparation and evaluation of carbon supported catalysts for ethanol oxidation
publisher Springer
publishDate 2017
url http://hdl.handle.net/20.500.12272/2629
work_keys_str_mv AT bonesialejandro preparationandevaluationofcarbonsupportedcatalystsforethanoloxidation
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