Electrochemical fabrication of polypyrrole nanofibers and their characterization

Polypyrrole (PPy) nanofibers have been fabricated on glassy carbon electrode (GCE) usingelectrochemical technique. Electropolymerization of pyrrole (Py) for the fabrication of PPy nanofiberswas occurred on GCE by applying a fixed potential of about 0.85 V for 120 sec in a mild basic solutioncontaining sodium carbonate and sodium perchlorate. In the mild basic media, the monomer, Py, isoxidized on GCE at a potential of about 0.85 V vs. Ag/AgCl and the oxidation product of Py i.e.polypyrrole nanofibers is strictly adsorbed on the electrode surface. Cyclic voltammetry,electrochemical impedance spectroscopy and scanning electron microscopy were used for studying theelectrochemical and morphological properties of electropolymerized PPy conducting polymer. Thesetechniques confirm the electropolymerization of Py as PPy nanofibers on the electrode surface.