▎ 摘　　要

NOVELTY - Graphene sheet having single layer sheet structure, number of graphene layer 2-50, SP2 inner layer arranged on a hybrid orbitals hexagonal honeycomb lattice, is claimed. USE - The graphene sheet is useful for absorbing organic matter in water (claimed). ADVANTAGE - The graphene sheet has high working efficiency, huge specific surface area and organic matter adsorption performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for regenerating graphene sheet comprising carrying out high temperature decomposition hot regeneration, ultrasonic regeneration and microbial regeneration with chemical reagent.