Synthesis and Characterization of Chitosan-Polyaniline-Manganese Dioxide Nanocomposite for Removal of Methyl Orange Dye

Abstract

An ecofriendly polymer composite based on chitosan, polyaniline and manganese dioxide has been prepared using batch adsorption method and analyzed by Fourier transform infrared (FTIR), UV-vis, X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). FTIR results suggested the presence of functional groups like hydroxyl and amino groups and also shown a significant shift in IR bands in CS-PANI-MnO2 composite. The surface of composite was quite rough within the folds of pleated regions as observed from the SEM and TEM morphologies. The prepared composite was also utilized as an adsorbent for the treatment of methyl orange from the aqueous solution and achieved a reasonably good adsorption capacity of 96.2%. The biochemical oxygen demand (BOD) and chemical oxygen demand (COD) tests also suggested their suitability for the adsorption of methyl orange dye.