▎ 摘　　要

The fabrication of highly efficient photocatalyst with excellent catalytic activity and robust stability is urgently desired. Herein, ternary TiO2/polyaniline /graphene composite was successfully prepared through a facile route. The morphologies, crystal phases, optical and electrochemical properties of the prepared photocatalysts were systematically investigated by XRD, SEM, TEM, FT-IR, PL, photocurrent response techniques. The resultant TiO2/polyaniline/graphene sample exhibited superior photodegradation performance towards organic dyes elimination (such as Rhodamine B, Methylene Blue, and Methyl Orange) under visible light irradiation, which was higher than that of pristine TiO2. Moreover, a cycling experiment revealed that as-prepared composite catalyst showed enhanced durability. Based on the above results and discussion, a plausible photocatalytic mechanism of ternary TiO2/polyaniline/graphene hybrid was proposed. Therefore, this work supplies a facile route to design highly efficient and stable photocatalysis for water purification.