The interrelation between the electrochemical behaviour of a polymer-coated electrode and the ion exchange properties of the coating |
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| Affiliation: | 1. College of Environmental Science and Engineering, Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, Donghua University, Shanghai 201620, PR China;2. Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China;3. Research Center for Analysis & Measurement, Donghua University, Shanghai 201620, PR China |
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| Abstract: | The Fe(CN)3−/4−6 charge-transfer reaction was studied with anion-exchange polymer-coated electrodes SO2−4 and ClO−4 were mainly used as the anions of the background electrolyte. The electrochemical results are correlated with the equilibrium distribution of the ions between the electrolyte and the coating. Since the considered anions are ir-active their concentration in the film could be determined by ir-reflection-absorption spectroscopy, after the coated electrodes had been withdrawn from the electrolyte. The strong influence of the films' ion-exchange selectivity on the electrode behaviour is demonstrated. |
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