Synthesis of Hybrid Nanocomposite Based on PbO2 and Polyaniline Coated onto Stainless Steel by Cyclic Voltammetry

Abstract

A hybrid nanocomposite based on PbO₂ and polyaniline (PbO₂-PANi) coated onto stainless steel by cyclic voltammetry was investigated. It was found that PbO₂ exists in both a and b-modifications by X-ray diffraction and cyclic voltammogram, but it leans toward b-form. The adsorption of N-H group as well as the presence of benzenoid and quinonoid ring vibrations on IR-spectrum asserts that polyaniline was successfully co-electrodeposited with PbO₂ and created a composite of nanostructured PbO₂-PANi. This was clearly evidented by SEM and TEM images. Its thermal stability was higher than that of lead dioxide alone due to the presence of polyaniline in composite matrix resulting particle size in nano range which affected significantly by scan rate during synthesizing process.