| Full text | |
| Author(s): |
De Souza, R. F. B.
[1]
;
Silva, J. C. M.
[1]
;
Simoes, F. C.
[1]
;
Calegaro, M. L.
[2]
;
Neto, A. O.
[3]
;
Santos, M. C.
[1]
Total Authors: 6
|
| Affiliation: | [1] Univ Fed Abc, CCNH, LEMN, BR-09210170 Santo Andre, SP - Brazil
[2] Univ Sao Paulo, Inst Quim Sao Carlos, Grp Mat Eletroquim & Metodos Eletroanalit, BR-13566590 Sao Carlos, SP - Brazil
[3] CNEN SP, IPEN, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | International Journal of Electrochemical Science; v. 7, n. 6, p. 5356-5366, JUN 2012. |
| Web of Science Citations: | 15 |
| Abstract | |
This work describes the study of the ethanol oxidation reaction of a Pt/C Etek electrocatalyst that was supported on different substrates, such as gold, glassy carbon and carbon cloth treated with PTFE. In the ethanol oxidation reaction, the activity varies with the substrate, as well as the pathways for ethanol oxidation, as studied by an ATR-FTIR in situ setup using the carbon cloth as the electrocatalyst support. The electrocatalyst Pt/C supported on gold starts acetaldehyde production from ethanol oxidation at an onset potential of 0.1 V less than that observed for the same process on Teflon-treated carbon cloth. The Pt/C supported on the carbon cloth starts its CO2 production for the same oxidation process at 0.2 V less than on the Pt/C supported on gold substrate. The differences in catalytic activity for the ethanol oxidation reaction depend not only on the electrocatalyst but also on various electrode factors, such as the substrate, the roughness of the electrode and the charge transfer resistance. (AU) | |
| 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 |
| FAPESP's process: | 10/03037-4 - Degradation mechanism study of the cathode and anode catalyst for direct ethanol fuel cell |
| Grantee: | Fernando Carmona Simões |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| 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 |