Artículo
Preparation and evaluation of carbon-supported catalysts for ethanol oxidation
Bonesi, Alejandro Roberto; Asteazaran, Mariano
; Moreno, Mario Sergio Jesus
; Zampieri, Guillermo Enrique
; Bengió, Silvina
; Triaca, Walter Enrique
; Castro Luna Berenguer, Ana Maria del Carmen
Fecha de publicación:
06/2013
Editorial:
Springer
Revista:
Journal of Solid State Electrochemistry (print)
ISSN:
1432-8488
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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.
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Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos(INIFTA)
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Bonesi, Alejandro Roberto; Asteazaran, Mariano; Moreno, Mario Sergio Jesus; Zampieri, Guillermo Enrique; Bengió, Silvina; et al.; Preparation and evaluation of carbon-supported catalysts for ethanol oxidation; Springer; Journal of Solid State Electrochemistry (print); 17; 7; 6-2013; 1823-1829
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