The Mediation Effect of a Polyaniline‐Coated Electrode on the Reduction of Iron (III) Ions

The mediation effect of polyaniline-coated platinum electrodes on the reduction of iron(III) ions was studied by the cyclic voltammetry and rotating disk electrode methods. The rate constants of the cross reaction between iron(III) ions and polyaniline (PA) were found to depend upon the amount of PA coated on the electrode. On the basis of the rate constants the PA-coated electrode mediates the reduction of iron(III) ion efficiently and behaves as well as a metallic electrode.

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