Preparation and Characterization of Polyaniline Nanotube

Abstract

The present work reports slightly modification of the conventional chemical synthesis of polyaniline (PANI) to be nanotube structure without the need for any template or structural directing materials. PANI preparation was optimized by the oxidation of two different precursors: aniline and aniline hydrochloride with ammonium persulfate (APS) as oxidizing agent in various aqueous media of strong, weak acid and in alkaline medium at different pH values. Structural and morphological properties of the products are characterized by SEM, XRD and FTIR. Results showed the strong dependence of PANI nanotube on the acidity at certain pH value during the oxidation of aniline by APS. It is founded that, the optimum condition for preparation of PANI nanotube was obtained under oxidation of aniline monomer by APS in aqueous media of weak acid medium at pH five degree.