Construction of polyanilne/ITO electrode for electrochemical sensor applications

Abstract Herein, we have report electrochemical synthesis of polyanilne (PANI) films on indium doped tin oxide (ITO) glass substrate using cyclic voltammetry. The formation of PANI was determined by powder x-ray diffraction = PXRD and Fourier-Transform Infrared Spectroscopy = FTIR measurements. The surface morphology of the electrochemically grown PANI on ITO glass ( ITO/PANI ) was found to be rod like as confirmed by Field Emission Scanning Electron Microscopy = FE-SEM analysis. Further, this prepared film was used as working electrode for the electrochemical sensing of p -nitrophenol ( p -NP). The ITO/PANI based p -NP sensor exhibited interesting detection limit of 2 ± 0.5 μ M. The performance of ITO/PANI electrode was also found selective and reproducible using cyclic voltammetry.