▎ 摘　　要

NOVELTY - Graphene oxide composite material preparation involves taking expanded graphite, concentrated sulfuric acid, potassium permanganate, polyacrylamide, and hydrogen peroxide in proportion. The potassium permanganate, polyacrylamide, and hydrogen peroxide are provided in a mass ratio of 1:180-250:7-9:1-2:4-5. The concentrated sulfuric acid is added to the reaction container, then mixed with expanded graphite to the reaction container with stirring for 10-20 minutes. The obtained material is reacted and refrigerated for 8-24 hours. The polyacrylamide is added to the reaction container with stirring for 2-3 hours at 95 degrees C, and then treated with hydrogen peroxide dropwise. The obtained reaction product is washed, immersed in hydrochloric acid, washed with deionized water, and then filtered and dried to obtain the graphene oxide composite material. USE - Method for preparing graphene oxide composite material for industrial wastewater treatment. ADVANTAGE - The method prepares the graphene oxide composite material in a simple, cost-effective and eco-friendly manner with improved adsorption effect of methylene blue and lead ions. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic scanning electron microscope image of the composite material.