Nitroarens compound such as nitrobenzene and cloronitrobenzene, which have toxic and hazardous effects on all living organisms, including humans, animals and crops even at trace concentrations[1] Nitrobenzene (NB) is one class of hazardous pollutants [2]. NB used for production of paints, solvents and aniline.[3] Therefore, conversion of NB into useful compounds such as hydroxylamine is important. Cyclic voltamogram of NB under N2 atmosphere was studied in details. In CV (starting and switching potentials are -0.1 V and -1, 0.7 V vs. Ag/AgCl, respectively) NB doesn’t undergo electrochemical oxidation and reduction reactions. But, upon scanning to negative and then positive potentials, the CV exhibits one irreversible cathodic peak (C0) at -0.6 V related to conversion of NB to phenylhydroxylamin (ArNHOH) and also a reversible system (A1/C1) ascribed to the phenylhydroxylamin/nitrosophenyl (ArNHOH/ArNO) couple.
