▎ 摘　　要

NOVELTY - Preparing Janus structure reducing graphene oxide film/titanium dioxide composite material comprises preparing graphene oxide film using graphene oxide as a raw material and suction filtering to form a film, preparing reductive graphene oxide film by poly-lysine reduction, preparing the Janus structure-reduced graphene oxide film by one-side hydrophobic modification, and finally loading the nano-titanium dioxide on the hydrophilic surface. USE - The method is useful for preparing Janus structure reducing graphene oxide film/titanium dioxide composite material. ADVANTAGE - The material has good photo-catalytic activity for common dye pollutant.