▎ 摘　　要

NOVELTY - A titanium dioxide modified photocatalyst preparing method involves grating titanium dioxide in powder form with a reduced form of graphene oxide, subjecting to hydrothermal treatment at 180 degrees C in an autoclave for 4 hours under autogenous pressure conditions in the presence of 2-propanol, maintaining for 1 hour at the same temperature under atmospheric pressure to obtain a composite. The composite is subjected to annealing in an inert gas atmosphere at a temperature of 300-700 degrees C for 4 hours to obtain the finished product. USE - Method for preparing titanium dioxide modified photocatalyst.