▎ 摘　　要

The purpose of this study is to develop a highly capable reduced graphene oxide, polythiophene, and silica-based low-cost composite material and investigate its adsorption behavior. The synthesized composite was analyzed using various analytical methods and applied to eliminate highly toxic metallic pollutants from contaminated water. Different adsorption parameters were used to decontaminate the wastewater. The best conditions for removing Pb2+ and Cd2+ ions were obtained. The adsorption efficiency was determined to be 65.9 (+/- 0.9) % and 61.5 (+/- 1.4) % at contact time of 60 minutes, 75.9 (+/- 0.7) % and 76.1 (+/- 0.8) % at 105 mg of adsorbent, 98.7 (+/- 0.7) % and 93.2 (+/- 0.6) % at pH 6 for Pb2+ and Cd2+ ions. The adsorbent was re-utilized up to three times with good adsorption effectiveness. A thermodynamic study has indicated the spontaneity of the adsorption process. The pseudo second order rate constant were found to be 19.1 (+/- 1.5) and 16.5 (+/- 1.7) g/mg/min for Pb2+ and Cd2+ ions, respectively.