Abstract
The electrosynthesis of pereoxidized polypyrrole composite with oxy-hydroxy compounds cobalt in a strongly acidic environment has been described mathematically, using linear stability theory and bifurcation analysis. The conditions of stability of stationary states and self-oscillatory and monotonic instability have been described also. The system behavior was compared with behavior of other systems with pereoxidation, electropolymerization of heterocyclic compounds and electrosynthesis of the oxy-hydroxy compounds cobalt.
Highlights
Conducting or conducting polymers (CP) occupy their place among the most studied materials during the last 50 years [1–4], due to their ability to combine the properties of plastics with metallic conductivity, so they are called synthetic metals
The oxidation of compounds of bivalent cobalt to trivalent occurs at relatively high potentials, No 1 | 2016 Chimica Techno Acta in which some conducting polymers, such as polypyrrole [17–18], undergo a process of so-called “overoxidation”, known as reconfiguration of the conjugated system in the polymer according to the following mechanism
For the mathematical description of potentiostatic electrosynthesis of the composite of the overoxidized polypyrrole with CoO(OH), from neutral polypyrrole in strongly acidic media without fluorine ions, we introduce three variables: c – concentration of ions of bivalent cobalt in the surface layer; θ – degree of surface filling overoxidized polypyrrole; h is the concentration of protons in the surface layer
Summary
Conducting or conducting polymers (CP) occupy their place among the most studied materials during the last 50 years [1–4], due to their ability to combine the properties of plastics (flexibility and corrosion resistance) with metallic conductivity, so they are called synthetic metals Another advantage that they possess is the ease of modification, giving them a wide and rich range of applications, from anticorrosive coatings to sensors and biosensors [5–12]. The study of their causes is one of the key stages to determine the most probable mechanism of this process Such phenomena has gained only phenomenological interpretation, which, though it may proceed from a logical conviction, has no solid theoretical justification, that can be given only by analyzing mathematical models, can adequately describe the process, which will be done in this work. This analysis can explain the behavior of such systems and (as a consequence of the theorem of Kirpichev and Guchman) compare them with other similar systems are described, for example in [33–49]
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