Abstract

AbstractAn equation to express ion exchange selectivity coefficient was derived and used for calculating that of PPY film with the results obtained by cyclic voltammetric measurement. PPY film was synthesized by electrochemical method in aqueous solution using K4Fe(CN)6 as supporting electrolyte, and the anions were doped into the film. Ion exchange behaviour of doped Fe (CN)63‐/4‐ in the PPY film with Cl−, NO3− or F− ions in solution has been studied, and the corresponding ion exchange selectivity coefficients were determined.

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