Aromatic nitro compound such as nitrophenol and nitroaniline important group of compounds that were used in pharmaceuticals, paint, insecticides and pesticides but they are very toxic substance that are present in water and environment [1] so reduction of nitro group and convert them to other functional components with a simple, inexpensive, non-free solvent and any catalyst method is very important. [2] In the same manner, electrochemical behavior of p-Nitrophenol (PNP), the Cyclic Voltamogram (CV) exhibits two anodic (A1, A2) and fore cathodic peaks (C0, C1, C2 and C'2). Peak C0 is related to the reduction of PNP to hydroxylamine species results from a 4e-,4H+ . Peak (A1) is observed for oxidation of the phenol group to quinoneimine and (C1) is corresponds quinoneimine to p-aminophenol via a 2e-, 2H+.As can be seen, the anodic peak (A2) and the corresponding cathodic peak (C2, C'2 ) were obtained, which corresponds to the transformation of hydroxylamine species to p-amino phenol within an irreversible two-electron process. P-Nitro aniline (PNA). the CV exhibits one anodic (A1) and two cathodic peaks (C0 and C1). Peak C0 is related to the reduction of p-nitroanilin to hydroxylamine species results from a 4e-,4H+. Peak (A1) is observed for oxidation of the phenol group to quinoneimine and (C1) is corresponds quinoneimine to p-aminophenol via a 2e-, 2H+.
