▎ 摘　　要

NOVELTY - Preparing titanium dioxide/chitosan/graphene oxide composite material involves dispersing 0.05-1 g graphite oxide into 50 ml volume fraction of 5-8% dilute acetic acid at normal temperature, adding chitosan powder, continuously stirring for 3-5 hours, slowly adding titanium dioxide at 40-60 degrees C at constant temperature, continuously stirring and reacting for 3 hours to form glue solution, dripping the glue solution into 0.1 M sodium hydroxide solution, standing for 4-12 hours, washing to neutral, freezing and drying to obtain the composite material. USE - For preparing titanium dioxide/chitosan/graphene oxide composite material which is useful for processing waste water containing heavy metal arsenic (claimed). ADVANTAGE - The method is simple and environment-friendly; and has high efficiency.