▎ 摘　　要

In this study, a new composite of activated carbon clothlgraphene oxide (ACC/GO) was prepared, characterized and used as electrode material for the electro-assisted adsorptive removal of Co2+ and Cs+ from aqueous solution. The ACC/GO composite was synthesized by a vacuum filtration method, and characterized by cyclic voltammetry and various surface characterization methods. Effect of applied voltage and initial concentration of Co2+ and Cs on their removal efficiency was examined. The kinetics and isotherms of Co2+ and Cs' adsorption were investigated to explain the adsorption mechanism. AL 0 V, the removal efficiency of Co2+ and Cs+ was 10.1% and 21.4%; at 1.2 V, eleclw-assistance increased the removal efficiency of Co2+ and Cs+ to 40.8% and 39.7%, respectively. Moreover, ACC/GO composite electrode had higher adsorption capacity compared to the pristine ACC electrode, due W its higher specific surface area and more oxygen-containing functional groups. The maximum adsorption capacity of Co2+ and Cs was 16.7 mg g(-1) and 22.9 mg g(-1), respectively at 1.2 V and 20 mg L-1 by ACC/GO composite electrode. The modeling and experimental results demonstrated that the removal mechanism involved in physical adsorption, chemical adsorption, and electro-adsorption. Overall, the prepared ACC/GO composite electrode had high capacitive deionization performance in removing heavy metal ions from wastewater. (C) 2020 Elsevier B.V. All rights reserved.