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Abstract
The influence of acetate, Pb2+ species and pyrrole on the electrodeposition of lead dioxide and polypyrrole on a glassy carbon electrode in 1.0m potassium nitrate medium was studied using cyclic voltammetry, double potential step chronoamperometry and controlled potential electrolysis techniques. In the presence of acetate ion the deposition of lead dioxide initiates at least 200 mV less positive compared to nitrate ions alone. At lower acetate ion concentration ( 20 mm) acetate ions are found to inhibit polypyrrole formation. The following is the decreasing order of inhibition of polypyrrole formation. Sodium acetate > lead nitrate > lead acetate. Acetate in the form of lead acetate is found to favour simultaneous deposition of lead dioxide and polypyrrole with minimum inhibition on polypyrrole formation.
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