▎ 摘　　要

NOVELTY - Preparing three-dimensional graphene oxide composite material comprises (i) taking crystalline flake graphite as raw material to prepare graphene oxide solution; and (ii) adding 2-amino benzothiazole into the graphene oxide solution, stirring, carrying out ultrasonic mixing uniformly, performing self-assembling reaction at high temperature and high pressure, freezing and drying. USE - The three-dimensional graphene oxide composite material is useful in recovery of rare earth ions in aqueous solutions (claimed). ADVANTAGE - The method: is simple; interacts with graphene oxide under high temperature and high pressure through the pi pi function and hydrogen bond of 2aminobenzothiazole; can avoid the agglomeration of the graphene oxide substrate and form a stable three-dimensional columnar structure; produces composite material with a good adsorption effect on rare earth ions and good reusability and is useful in adsorption material for rare earth enrichment and recovery; and can achieves regeneration and recycling performance in the adsorption process and greatly reduces the cost of adsorption materials . DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) three-dimensional graphene oxide composite material, prepared as mentioned above; and (2) application of three-dimensional graphene oxide composite material in recovery of rare earth ions in aqueous solutions, preferably rare earth ions comprises lanthanum ions, erbium ions, ytterbium ions, neodymium ions, and yttrium ions.