Kinetic analysis of electron transfer between hexacyanoferrate(III) in water and ferrocene in nitrobenzene by ac impedance measurements
✍ Scribed by Qi-Zhu Chen; Kazutoshi Iwamoto; Manabu Senō
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 514 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
Abstmact-The rate of electron transfer between hexacyanoferrate(II1) in water and ferrocene in nitrobenzene has been investigated by the UC impedance measurements at an equilibrium potential Ed,.. The impedance data were analysed according to an electrical equivalent circuit. The effective exchange current (i,,Xsand the formal charge transfer coefficient a for the electron transfer reaction were determined. Moreover, the dependence of these kinetic parameters upon the concentrations of Fe(CN):-in the aqueous phase and ferrocene in the nitrobenzene phase was also examined. It was observed that the change in the concentration of K,Fe(CN), influences the kinetic behaviour of electron transfer reaction to a larger extent than that of ferrocene.