The Mechanism for Ethanol Oxidation Reaction on SnO2@Pt/C Core Shell Electrocatalyst

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Silva, J. C. M. ; De Souza, R. F. B. ; Calegaro, M. L. ; Santos, C. ; Gasteiger, HA ; Weber, A ; Narayanan, SR ; Jones, D ; Strasser, P ; SwiderLyons, K ; Buchi, FN ; Shirvanian, P ; Nakagawa, H ; Uchida, H ; Mukerjee, S ; Schmidt, TJ ; Ramani, V ; Fuller, T ; Edmundson, M ; Lamy, C ; Mantz, R

• Document type: Journal article
• Source: POLYMER ELECTROLYTE FUEL CELLS 11; v. 41, n. 1, p. 6-pg., 2011-01-01.

Abstract

In the present work we investigated the products distributions from ethanol oxidation reaction (EOR) in acid solutions using SnO2@Pt/C core-shell, PtSn/C E-TEK and Pt/C E-TEK as electrocatalysts assisted by "in situ" ATR-FTIR technique to obtain information about EOR mechanism on these materials. All materials used were 20% (w/w) metal on carbon XC 72-R. From "in situ" ATR-FTIR experiments with ethanol 1.0 mol L-1 it can be seen that the SnO2@Pt/C material led to CO2 formation in great proportion, while that, in Pt/C E-TEK acetic acid and acetaldehyde were the main products. In the chronoamperometry experiments at 0.5 V (vs RHE), the mass current density for ethanol oxidation was higher using SnO2@Pt/C when compared to Pt/C and PtSn/C E-tek. (AU)

• FAPESP's process: 10/07831-7 - Synthesis and characterization of PtSn/C, PtIr/C and PtSnIr for the study of the mechanism of ethanol electrochemical oxidation using spectroscopic in situ techniques
• Grantee: Júlio César Martins da Silva
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 09/09145-6 - Study of ethanol electrochemical oxidation mechanism on PtSn, PtCe and PtSnCe using in-situ spectroscopic techniques
• Grantee: Rodrigo Fernando Brambilla de Souza
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 10/16511-6 - Energy generation from biofuel using nanostructures
• Grantee: Mauro Coelho dos Santos
• Support Opportunities: Regular Research Grants