▎ 摘　　要

NOVELTY - A graphene-based adsorbent comprises 10-20 parts mass graphene, 8-10 parts mass attapulgite, 9-16 parts mass zinc oxide, 19-30 parts mass calcium oxide, 10-18 parts mass manganese metal promoter, 10-18 parts mass potassium permanganate solution, 10-20 parts mass deionized water and 18-25 parts mass copper nitrate solution. USE - Graphene-based adsorbent. ADVANTAGE - The graphene-based adsorbent with strong absorbability and high-efficiency is prepared by simple, environmentally-friendly and economical process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene-based adsorbent, which involves mixing the above mentioned raw materials, heating at 150-200 degrees C for 2-5 hours, washing, drying at 450 degrees C, hydrothermally reacting at 190-210 degrees C for 20-60 minutes, washing and drying.