▎ 摘　　要

NOVELTY - Graphene composite antibacterial purification material comprises 20-50 pts. wt. graphene, 10-15 pts. wt. lignin, 40-60 pts. wt. coconut shell activated carbon, 2-8 pts. wt. nano-titanium dioxide, 0.5-3 pts. wt. methyl cellulose, 0.5-3 pts. wt. talc powder and 400-600 pts. wt. deionized water. USE - The purification material is used for particulate matter 2.5. ADVANTAGE - The purification material removes other harmful air or water pollutants while ensuring sufficient filtration of particulate matter 2.5. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the graphene composite antibacterial purification material, involving (a) adding coconut shell activated carbon, lignin, nano-titanium dioxide, methyl cellulose and talc powder to stirrer in sequence, uniformly stirring and mixing to obtain mixture, (b) drying obtained mixture, naturally cooling the mixture to room temperature, and grinding the cooled mixture to obtain pretreated powder, (c) placing graphene in deionized water to form suspension, and ultrasonically treating the suspension, and (d) uniformly mixing obtained suspension with pretreated powder, and roasting to obtain graphene composite purification material.