▎ 摘　　要

NOVELTY - Preparation of graphene-titanium dioxide composite nano material involves dissolving graphite oxide prepared by Hummers method in an acetone solution, ultrasonically dispersing, obtaining graphene oxide suspension (A), adding titanate compound to alcohol solution, stirring at room temperature, obtaining titanium dioxide precursor solution (B), adding titanium dioxide precursor solution (B) to graphene oxide suspension (A), mixing, maintaining, centrifuging, obtaining precipitate, adding deionized water to precipitate, carrying out hydrothermal reaction, cooling to room temperature, obtaining reaction liquid (C), centrifuging to separate the product, ultrasonically dispersing, washing, separating the precipitate, and drying. USE - Preparation of graphene-titanium dioxide composite nano material. ADVANTAGE - The method efficiently provides graphene-titanium dioxide composite nano material having high specific surface area and excellent photocatalytic performance.