▎ 摘　　要

NOVELTY - Preparing L-arginine modified graphene oxide sponge, comprises using graphene oxide (GO) as precursor, L-arginine as cross-linking agent, carrying out hydrothermal reaction and freeze-drying to obtain L-arginine modified graphene oxide sponge (L-Ar-GOS) with three-dimensional structure; during the reaction, L-arginine induces the self-assembly of graphene oxide into macroscopic state three-dimensional graphene material under hydrothermal conditions, and in this process, L-arginine and graphene oxide react, where the reacted material has a large specific surface area and a loose porous structure, which is favorable for adsorbing metal ions. USE - The three-dimensional graphene sponge and graphene oxide are used for the adsorption of uranium (VI) in aqueous solution. ADVANTAGE - The results show that the adsorption capacity of three-dimensional graphene sponge is better than that of graphene oxide.