▎ 摘　　要

NOVELTY - A graphene-containing nanocomposite comprises graphene, and a layered double hydroxide (LDH) comprising divalent cation(s), trivalent cation(s) and interlayer anion(s). The graphene and the LDH form a graphene-LDH (G-LDH) nanocomposite. USE - Graphene-containing nanocomposite is used for adsorption of carbon dioxide from coal-burning power plants. ADVANTAGE - The graphene-containing nanocomposite is highly selective, has excellent adsorption capacity, and high regeneration capacity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of G-LDH, which involves mixing an aqueous LDH-containing solution and graphene, and sonicating the resulting mixture; and (2) graphene-titanium oxide nanocomposite comprising graphene and titanium oxide.