▎ 摘　　要

NOVELTY - A bifunctional graphene aerogel comprises three-dimensional porous network structure comprising graphene sheets modified by plant tannin. USE - Bifunctional graphene aerogel used for photothermal seawater desalination or seawater uranium adsorption (claimed). ADVANTAGE - The product has good mechanical strength, excellent hydrophilicity and water absorption, has excellent light and hot water evaporation performance, and uranium adsorption performance, and can simultaneously realize light and hot water evaporation and uranium extraction. The method is simple, mild, easy, environment-friendly and suitable for continuous production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation of bifunctional graphene aerogel comprising dispersing graphene oxide and plant tannin in solvent to obtain precursor dispersion, heating, standing to obtain graphene wet gel, and drying.