Shukla, A. K. ; Ravikumar, M. K. ; Roy, A. ; Barman, S. R. ; Sarma, D. D. ; Aricò, A. S. ; Antonucci, V. ; Pino, L. ; Giordano, N. (1994) Electro-oxidation of methanol in sulfuric acid electrolyte on platinized-carbon electrodes with several functional-group characteristics Journal of the Electrochemical Society, 141 (6). pp. 1517-1522. ISSN 0013-4651
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Official URL: http://link.aip.org/link/?JESOAN/141/1517/1
Related URL: http://dx.doi.org/10.1149/1.2054955
Abstract
The effect of acid/base functional-groups associated with platinized-carbon electrodes on their catalytic activitytoward electro-oxidation of methanol in sulfuric acid electrolyte at 60°C is studied. Platinized-carbon electrodes with smallamounts of functional groups exhibit higher catalytic activity compared to those with large concentrations of acidic/basicsurface functionalities. The overpotential for methanol oxidation is minimum on electrodes of platinized carbons with pHzpc values between 6 and 7. An x-ray photoelectron spectroscopic study of various platinized carbons suggests that theacid/base surface functional-groups produce ample amounts of surface Pt-oxides and a consequent decrease in activitytoward methanol oxidation.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The Electrochemical Society. |
| Keywords: | Oxidation; Catalysis; Electrochemistry; Surface Chemistry; Electrochemical Electrodes; Chemisorption; Electric Potential |
| ID Code: | 46239 |
| Deposited On: | 02 Jul 2011 13:53 |
| Last Modified: | 17 Jul 2012 08:35 |
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