▎ 摘　　要

NOVELTY - Preparation of graphene oxide-chitosan composite material comprises dissolving chitosan in 3 wt.% acetic acid solution, ultrasonic treating at bath ratio of 1:50 for 1-12 hours, adding 2-10 g/L sodium periodate, reacting at 40-80 degrees C for 10-60 minutes in the dark, washing with deionized water, centrifuging, drying, adding graphene oxide solution, mixing at 20-80 degrees C for 1-10 hours, washing with deionized water, centrifuging, and drying. USE - Method for preparing graphene oxide-chitosan composite material (claimed) used for treating water pollution. ADVANTAGE - The material is suitable for biomedical applications.