▎ 摘　　要

NOVELTY - Composite material comprises 1-20 wt.% hydroxy-cucurbituril and balance of graphene oxide, where hydroxy-cucurbituril is linked to graphene oxide by hydrogen bonding, and hydroxy cucurbituril are dispersed in molecular form on surface of graphene oxide. USE - Used as composite material. ADVANTAGE - The composite material has simple preparation method, and is easy to operate, and produces materials having high uranyl ion adsorption capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing composite material comprising (i) dispersing graphene oxide prepared by Hummers method in organo solvent ultrasonically to obtain first solution, (ii) adding hydroxy cucurbituril to first solution, and stirring at room temperature for 10-50 hours to obtain second solution, and (iii) subjecting second solution to centrifugal separation to obtain solid, washing obtained solid, and then dry to obtain final product, where mass ratio of hydroxy cucurbituril to graphene oxide is 1:0.5-10, volume of organic solvent is 1 l, and mass of graphene is 0.2-1.80 g.