Artículo
On the design of Pt based catalysts. Combining porous architecture with surface modification by Sn for electrocatalytic activity enhancement
Flórez Montaño, Jonathan; García, Gonzalo; Rodríguez, José L.; Pastor Cavada, Elena
; Cappellari, Paula Sofía
; Planes, Gabriel Angel
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
05/2015
Editorial:
Elsevier Science
Revista:
Journal of Power Sources
ISSN:
0378-7753
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Metallic mesoporous (MP) catalysts with large surface area can be obtained in-situ, in a single step, by electrochemical reduction. In this work, the electrochemical behavior of MPPt and Sn modified mesoporous Pt (MPPt/Sn) was studied and compared with commercial carbon supported PtSn alloy (3:1). The electrochemical activity toward carbon monoxide and methanol oxidation reactions were evaluated by cyclic voltammetry and chronoamperometry, whereas X-ray photoelectron spectroscopy was used to determine the surface composition and oxidation state of the atoms in the top layers of the catalysts. The analysis of methanol conversion to CO2 was performed with aid of differential electrochemical mass spectrometry (DEMS). Results reveal a better performance of the MPPt/Sn, which shows higher current density and energy conversion efficiency of fuel to CO2 than conventional carbon supported PtSn alloy (3:1).
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Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Flórez Montaño, Jonathan; García, Gonzalo; Rodríguez, José L.; Pastor Cavada, Elena; Cappellari, Paula Sofía; et al.; On the design of Pt based catalysts. Combining porous architecture with surface modification by Sn for electrocatalytic activity enhancement; Elsevier Science; Journal of Power Sources; 282; 5-2015; 34-44
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