Study on electrocatalytic performance of polyaniline film electrode in polymerization of aniline monomer

Polyaniline film electrode was prepared by constant potential electrolysis. Effects of sweep rate, monomer concentration and temperature on its electr ocatalytic performance for polymerization of aniline monomer were studied. Compared with the blank platinum electrode, the potential of the oxidation polymerization of aniline monomer on the polyaniline film electrode shifted negatively. It is showed that the polyaniline film has obvious catalytic a ction in the polymerization. In addition, the redox peak current on polyani line film electrode linearly depends on the square root of the potential sw eep rate. It is indicated that the electrode reaction on polyaniline film i s controlled by diffusion process.