PHOSPHATE FUNCTIONALIZED GRAPHENE OXIDE AS ADSORBENT FOR THE REMOVAL OF PB(II) FROM AQUEOUS SOLUTION

摘要

Phosphate functionalized graphene oxide (PGO) was prepared by grafting triethyl phosphite onto the surface of graphene oxide (GO) by Arbuzov reaction. The characterization of PGO demonstrated that GO was successfully functionalized by phosphate and the resulting PGO was evaluated as an adsorbent to remove lead from aqueous solution. The experimental results indicated that the PGO showed higher adsorption capacity than GO. The adsorption capacity of PGO was calculated as 236.6 mg/g at 25°C room temperature.