Abstract
Electrocatalytic systems are effective means for breakdown of pollutants in aqueous solution. 2',4',5',7'-Tetrabromofluorescein (eosin) is a convenient model compound for simulation of electrocatalytic oxidation of dioxins. Adsorption of eosin on platinum at potentials exceeding the oxygen evolution potential was discovered. The adsorbate orientation on platinum is presumably planar. The kinetics of electrocatalytic oxidation of eosin in aqueous solution were studied; the reaction orders, rate constants, half-lives, and activation energy were determined. Eosin is oxidized to mineral products (carbonates, bromates). Schemes of the electrocatalytic oxidation of the substrates were suggested.
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