Preparation of porous carbon materials by polyphosphazene as precursor for sorption of U(VI)

Polyphosphazene was synthesized by ultrasonic using 4,4-diaminodiphenyl ether and hexachlorocyclotriphosphazene (HCCP) as precursors. Next, it further carbonized functionalized to prepare the carboxylic-acid N, P co-doped carbon materials (NPCs-COOH). The structure of NPCs-COOH characterized FTIR, SEM XPS. sorption performance for U(VI) in solution were determined under diverse factors including pH values, initial concentration, equilibrium time reaction temperature. results indicated that optimal value 5.0 60.0 min. maximum capacity from experimental 425.16 mg/g. analysis thermodynamics kinetics showed had excellent so can be utilized on removal effectively aqueous solution.