Abstract
The study of the oxidation of dissolved CO is not much seen in the literature probably due to the strong adsorption of CO on platinum metals in acidic media. This work was thus undertaken to study the electrochemical oxidation of dissolved CO on Au in alkaline medium without the influence of adsorbed CO. Our results show that the electrochemical oxidation of dissolved CO on gold electrode is mainly diffusion-controlled process at the potential greater than 0.3V (vs. RHE). At the potential range between 0.0V and 0.3V, the oxidation process is a mixed-control process. Our data also confirm that the electrochemical oxidation of dissolved CO is affected by the presence of surface oxide on gold. The electrochemical oxidation of the dissolved CO at liquid-solid interface may provide certain practical uses in CO removal or low temperature fuel cell.
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Andrew S. Lin is Associate Professor of Chang Gung University at Taiwan and he previously worked as a project leader of fuel cell program at Industrial Technology Research Institute after his residence at US Naval Research Laboratory.
Dr. Jerry Huang taught part-time in universities after his retirement from General Motors Research Center and he had more than 30 years experience in electrocatalysis and polymer electrolyte fuel cell. Both of them graduated from Case Western Reserve University and worked with Prof. Ernest B. Yeager in 1970 and 1990. They were studying on platinum and platinum alloys as electrocatalysts in acidic electrolytes for many years before studying gold as electrocatalysts in alkaline system. Mr. Johnny Lin graduated from CGU years ago and now is working at Antig Fuel Cell Company (www.antig.com).
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Lin, A.S., Lin, J. & Huang, J.C. Electrochemical oxidation of dissolved carbon monoxide on gold electrode in alkaline medium. Gold Bull 40, 82–85 (2007). https://doi.org/10.1007/BF03215297
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DOI: https://doi.org/10.1007/BF03215297