Title : ( Investigation of the effect of doping/dedoping on the redox behavior of polyaniline film: Experimental and modeling approach )
Authors: fateme ziaei moghadam , Reza Arefinia ,Abstract
In this study, a new mathematical model based on the cyclic voltammetry method was developed to study the electrochemical behavior of polyaniline (PANI) thin film in an aqueous solution. This model is one-dimensional and transient, considering the doping/dedoping process like an adsorption/desorption reaction. Moreover, the proposed model was successfully used for fitting the experimental voltammograms recorded at different scan rates. It is obtained that three modeling parameters: apparent formal potential (E0 app ′ ), apparent adsorption and desorption rate constants (kad,app and kde,app) depend on the scan rate. When scan rate increases, E0 app ′ and kad,app decrease, while kde,app increases. Based on the model generality, it was utilized to behave different types of redox reactions (reversible, quasi-reversible or irreversible) according to the standard rate constant (k0). In the present work, the reversibility was governed when k0 ≥ 16 s− 1, the irreversibility when k0 ≤ 0.07 s− 1 and between 0.07 and 16 s− 1, the quasi-reversibility was satisfied.
Keywords
, Polyaniline film, Mathematical modeling, Cyclic voltammetry, Quasi-reversible, Doping/dedoping.@article{paperid:1090938,
author = {Ziaei Moghadam, Fateme and Arefinia, Reza},
title = {Investigation of the effect of doping/dedoping on the redox behavior of polyaniline film: Experimental and modeling approach},
journal = {Progress in Organic Coatings},
year = {2022},
volume = {170},
month = {September},
issn = {0300-9440},
pages = {106952--106960},
numpages = {8},
keywords = {Polyaniline film; Mathematical modeling; Cyclic voltammetry; Quasi-reversible; Doping/dedoping.},
}
%0 Journal Article
%T Investigation of the effect of doping/dedoping on the redox behavior of polyaniline film: Experimental and modeling approach
%A Ziaei Moghadam, Fateme
%A Arefinia, Reza
%J Progress in Organic Coatings
%@ 0300-9440
%D 2022