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Franceschini, E.A.; Planes, G.A.; Williams, F.J.; Soler-Illia, G.J.A.A.; Corti, H.R. "Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation" (2011) Journal of Power Sources. 196(4):1723-1729
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Abstract:

Mesoporous Pt and Pt/Ru catalysts with 2D-hexagonal mesostructure were synthesized using a triblock poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) copolymer (Pluronic F127®) template, on a gold support. Large electrochemical surface areas were observed for the catalysts prepared at high overpotentials. Compared to the Pt catalyst, the Pt/Ru alloy containing 3 at% of Ru exhibited lower onset potential and more than three times the limit mass activity for methanol oxidation. This behavior is assigned to the larger pore size of the mesoporous Pt and Pt/Ru catalysts obtained with this template that seems to improve the methanol accessibility to the active sites compared to those obtained using lyotropic liquid crystals. © 2010 Elsevier B.V.

Registro:

Documento: Artículo
Título:Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation
Autor:Franceschini, E.A.; Planes, G.A.; Williams, F.J.; Soler-Illia, G.J.A.A.; Corti, H.R.
Filiación:Grupo de Celdas de Combustible, Departamento de Física de la Materia Condensada, Centro Atómico Constituyentes, CNEA, Av. General Paz 1499 (1650), San Martín, Buenos Aires, Argentina
Departamento de Química, Facultad de Ciencias Exactas, Fisicoquímicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal No 3, 5800, Río Cuarto, Argentina
Departamento de Química Inorgánica, Analítica y Química-Física, INQUIMAE CONICET, Ciudad Universitaria, Buenos Aires, Argentina
Gerencia de Química, Centro Atómico Constituyentes, CNEA, Av. General Paz 1499 (1650), San Martín, Buenos Aires, Argentina
Palabras clave:Catalyst; Fuel cells; Mesoporous; Methanol; PtRu alloys; 2D-hexagonal; Active site; Electrochemical surface area; Gold support; Lyotropic liquid crystal; Mass activity; Mesoporous; Methanol Oxidation; Onset potential; Over potential; Pluronic F-127; Pt catalysts; PtRu alloy; Triblocks; Alloys; Electrocatalysts; Ethylene; Fuel cells; Liquid crystals; Mesoporous materials; Methanol; Oxidation; Platinum; Polyethylene oxides; Propylene; Ruthenium alloys; Platinum alloys
Año:2011
Volumen:196
Número:4
Página de inicio:1723
Página de fin:1729
DOI: http://dx.doi.org/10.1016/j.jpowsour.2010.10.016
Título revista:Journal of Power Sources
Título revista abreviado:J Power Sources
ISSN:03787753
CODEN:JPSOD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03787753_v196_n4_p1723_Franceschini

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Citas:

---------- APA ----------
Franceschini, E.A., Planes, G.A., Williams, F.J., Soler-Illia, G.J.A.A. & Corti, H.R. (2011) . Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation. Journal of Power Sources, 196(4), 1723-1729.
http://dx.doi.org/10.1016/j.jpowsour.2010.10.016
---------- CHICAGO ----------
Franceschini, E.A., Planes, G.A., Williams, F.J., Soler-Illia, G.J.A.A., Corti, H.R. "Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation" . Journal of Power Sources 196, no. 4 (2011) : 1723-1729.
http://dx.doi.org/10.1016/j.jpowsour.2010.10.016
---------- MLA ----------
Franceschini, E.A., Planes, G.A., Williams, F.J., Soler-Illia, G.J.A.A., Corti, H.R. "Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation" . Journal of Power Sources, vol. 196, no. 4, 2011, pp. 1723-1729.
http://dx.doi.org/10.1016/j.jpowsour.2010.10.016
---------- VANCOUVER ----------
Franceschini, E.A., Planes, G.A., Williams, F.J., Soler-Illia, G.J.A.A., Corti, H.R. Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation. J Power Sources. 2011;196(4):1723-1729.
http://dx.doi.org/10.1016/j.jpowsour.2010.10.016