Abstract
The electrochemical oxidation of ethylene glycol has been studied on Pt, Pd and Au electrodes in alkaline medium in the absence and in the presence of metal ad-atoms. For pure-metal electrodes, the maximum current density was obtained at an Au electrode. However, in the presence of metal ad-atoms, enhancement of catalytic activity changes its order to: Pt>Au>Pd. The three different electrodes exhibit maximum catalytic activity when modified with Pb ad-atoms. The decreasing order of enhancement by ad-atoms under investigation is: Pb>Bi>Tl>Sn>Cd.
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