Abstract
The effect of addition of one atom of palladium to n atoms of gold (n = 1–5) dispersed in polyaniline electrodes, for the electrooxidation of methanol and ethanol in alkaline solution has been investigated. For comparison, oxidation at pure atomic metal electrodes, Pt/PANI–Au n=2–7 and Pt/PANI–Pd n=2–6, was performed. It is shown that the one added Pd atom affects the oxidation peak currents and makes a significant difference in selectivity. Similar to our previous studies, the electrocatalytic activity has been correlated with the theoretically predicted HOMO–LUMO gap energies for the atomic metal alloys. Effect of addition of one atom of Pd to Au n in polyaniline .
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