▎ 摘　　要

NOVELTY - Preparation of gold/graphene composite titanium dioxide nanotube comprises adding surfactant and chloroauric acid to solvent in sequence, stirring, adjusting pH to 8-10, adding titanium dioxide powder and reducing agent, reacting at room temperature for 1-5 hours, and separating solid; and adding graphene oxide powder, adding alkali to carry out hydrothermal reaction, separating solid, pickling, and heating to 100-400 degrees C for 1-1.5 hours. USE - The method is for preparation of gold/graphene composite titanium dioxide nanotube used for air purification (claimed). ADVANTAGE - The nanotube has high photocatalytic efficiency.