Studies on copper (II) removal from aqueous solutions by poly (3,4-ethylene dioxythiophene) polystyrene/sulphonate Sn (IV)tungstatophosphate (PEDOT: PSS/STP) nanocomposite

To address the pollution of heavy metal ions in water resources, a new adsorbent poly (3,4-ethylene dioxythiophene) polystyrene/sulphonate Sn (IV)tungstatophosphate (PEDOT: PSS/STP), made organic and inorganic materials, was effectively produced using sol-gel bottom-up approach. The surface morphology, elemental composition and, structural features synthesised nanocomposite were investigated by various spectroscopic techniques such as XRD, TEM, FESEM, EDAX, FTIR, whereas charge measurement (Zeta potential) ion exchange capacity (IEC) determined dynamic light scattering (DLS) analysis standard column method, respectively. batch experiment technique utilised to determine parameters for analysing adsorption behaviour elimination Cu (II) from aqueous solution. kinetics process pseudo-first-order pseudo-second-order kinetic models, while thermodynamics assessed Langmuir, Freundlich, Dubinin-Radushkevich (D-R) Temkin thermodynamic models. Langmuir isotherm best fit experimental data an solution with maximum 85.05 mg g−1 at pH 7.0 different temperatures, characteristics suited model. ΔHo, ΔGo, ΔSo represent onto PEDOT: PSS/STP is endothermic, spontaneous, chemisorption reaction. Furthermore, even after five adsorption-desorption cycles, around 70%, demonstrating that regeneration capability excellent, which fundamental characteristic select proper adsorbent.