ELECTROCHEMICAL METHOD FOR SYNTHESIS OF METAL-DOPED POLYANILINE

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to an electrochemical method for synthesis of metal-doped polyaniline, which involves preparation of a solution with the following concentration of components: sulphuric acid 0.5-1.5 mol/dm³, aniline 0.1-0.4 mol/dm³, transition metal salts 0.1-1.0 mol/dm³; conducting electrolysis at temperature of 10-30°C using a working electrode and an auxiliary electrode, wherein the solution preparation step involves further addition of 0.1-0.5 mol/dm³ aminoacetic acid or 0.1-0.5 mol/dm³ disodium salt of ethylenediaminetetraacetic acid; the transition metal salts used are transition metal sulphates; the working electrode and auxiliary electrode used are stainless steel electrodes; electrolysis is carried out with constant current density of 1-10 mA/cm², and after the electrolysis step, the obtained metal-doped polyaniline is treated with an alkaline solution at pH 8-10.;EFFECT: electrochemical method for synthesis of metal-doped polyaniline is cheap owing to use of stainless steel electrodes, and the obtained metal-doped polyaniline has high passivating capacity.;1 dwg, 3 ex