pH dependence of the voltammetric response of Polyaniline

SCOTTO, JULIANA; FLORIT, M. INÉS; POSADAS, DIONISIO

JOURNAL OF ELECTROANALYTICAL CHEMISTRY - (Print)

ELSEVIER SCIENCE SA

Año: 2017 vol. 785 p. 14 - 19

1572-6657

Voltammetric studies of Polyaniline (Pani) films were carried out in solutions of 3.7 M sulphate solutions of constant ionic strength and pH values comprised in the range between − 0.6 and 3.0. The results show that if the voltammetric results are properly corrected by capacitive currents, according to Feldberg´s model, it will be possible to obtain the potential dependence of the faradaic oxidation degree. The integrated anodic and cathodic charges are practically equal and independent of the electrolyte pH, in the range − 0.6