Zwitterion Functionalized Graphene Oxide/Polyacrylamide/Polyacrylic Acid Hydrogels with Photothermal Conversion and Antibacterial Properties for Highly Efficient Uranium Extraction from Seawater

Abstract In this study, graphene oxide (GO) and polyacrylamide/polyacrylic acid (PAM/PAA) are used to prepare hydrogels with photothermal conversion properties for highly efficient uranium extraction from seawater. Zwitterionic 2‐methacryloyloxy ethyl phosphorylcholine (MPC) is introduced in the PAM/PAA/GO hydrogel to obtain PAM/PAA/GO/MPC (PAGM), exhibiting good antibacterial properties. PAGM demonstrates efficient and specific adsorption of uranium (VI) (U(VI)). Under light conditions, the adsorption capacity of PAGM reaches 196.12 mg g −1 (pH = 8, t = 600 min, C 0 = 99.8 mg L −1 , m/v = 0.5 g L −1 ). The adsorption capacity is only 160.29 mg g −1 under dark conditions (pH = 8, t = 600 min, C 0 = 99.8 mg L…

• NN
  National Natural Science Foundation of China

  Awards: U20A20141, 52002356
• CP
  China Postdoctoral Science Foundation

  Award: 2020M672269