Polymerization Of Aniline/O-Aminobenzoic Acid On Gold Electrode And Its Electrochemical Behavior

ANT (aniline), 2-ABA (o-amino benzoic acid) as well as AM and 2-ABA in 4:1, 1:1, 1:4 molar ratios were polymerized on the gold electrode in 1.0 M H2SO4 electrolyte by Cyclic voltammetry (CV) scanning 20 cycles. Comparison of the peak shape and peak potential, peak current changes as the scanning number increased, as well as the trends of the peak potential and peak current of ANI and 2-ABA in different mole ratios at 20th cycle CV curves. When 2-ABA increased, the first oxidation peak potential of the 20th cycle curves positive shift and peak current decreased, while the trend of the peak current increased with the scanning number increased become smaller. That aniline more prone to polymerize on gold electrode by CV, adding o-amino acid would affect the polymerization, whereas o-aminobenzoic acid is not easy to polymerize in this condition.