▎ 摘　　要

NOVELTY - Preparation of graphene/titanium dioxide (P25) composite photocatalyst comprises dissolving graphene oxide in 90 ml 30% ethanol solution, stirring, performing ultrasonic treatment for 5-15 minutes, adding P25, stirring for 2 hours, transferring into 100 ml reaction kettle, heating at 120-180 degrees C for 48-72 hours, filtering, washing using water, drying at 50-60 degrees C, soaking 1 g graphene/P25 composite material in 2 ml concentrated hydrochloric acid, sealing for 24-48 hours in dark place, opening in hood until hydrochloric acid is completely volatilized, and drying at 50-60 degrees C. USE - Method for preparing graphene/titanium dioxide composite photocatalyst (claimed).