Efficient removal of safranin from aqueous solution using a new type of metalated highly self-doped polyaniline nanocomposite

Abstract We report the chemical synthesis of poly( aniline-co - aniline-2,5-disulfonic acid) ) and its composite containing L-hexuronic acid metallic Ag/SiO 2 nanoparticles as a new thermally stable anionic polyelectrolyte for removing safranin dye. The was characterized by IR, UV, cyclic voltammetry, SEM, TEM, TGA, DSC, EDXS elemental analyses. Microscopic images exhibited intensified spherical particles dispersed over almost entire surface. XRD peaks partially crystalline material at many 2θ values, their interatomic spacing sizes were calculated. voltammograms characteristic redox relative to quinoid ring transition states. uptake rates up 82.5% adsorption completed within 75 min equilibrium time 45 min. isotherm dye interprets interaction with adsorbent explain relationship between removal capacity initial concentration. In current, Langmuir model optimum interpret both dye/copolymer dye/composite interactions. copolymer/SiO @Ag nanocomposite well defined pseudo second order rate constant K = 0.03 g − 1 mg 19 safranin. A comparison efficiency synthesized other reported in same domain suggested that present has higher capacity. ongoing research is devoted improving percentage using 1,3,5-triazine based sulfonated polyaniline/Ag@ SiO nanocomposite.