▎ 摘　　要

NOVELTY - Preparation of graphene oxide-maya blue composite film comprises dispersing graphene oxide and maya blue nanoparticles in water/organic mixed solvent to prepare graphene oxide-maya blue dispersion; condensing and freeze-drying to prepare graphene oxide-maya blue aerogel; pressing to obtain graphene oxide-maya blue film; heating and reducing to prepare reduced graphene-maya blue film; and carbonizing, activating, and washing to obtain composite film. USE - Method for preparing graphene oxide-maya blue composite film. ADVANTAGE - The composite film has low density and absorbs and decomposes harmful gas in air and water such as formaldehyde.