ISSN:
1040-0397
Keywords:
Surface reaction
;
Square-wave voltammetry
;
Alizarin red S
;
Adscrption
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A fast and simple method for the estimation of kinetic parameters of surface redox reactions, based on the splitting of their square-wave voltammograms, is proposed. A mathematical procedure for simulation of these processes is developed. The method can be applied for the fast and chemically reversible redox reactions which are characterized by the kinetic parameter K ≥ 0.8 (K = ks/f). The standard rate constant, transfer coefficient and standard redox potential of the redox reaction of alizarine-red S adsorbed on the mercury electrode in pH 9 medium are ks = 60 ± 10s-1, α = 0.45 ± 0.03 and E° = -0.810 ± 0.005V (vs. Ag/AgCl-KCl).
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/elan.1140091613
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