▎ 摘　　要

NOVELTY - Hierarchical hole graphene comprises micron-scale stacking pores and nano-scale in-plane pores. USE - The hierarchical hole graphene is useful in fast and efficient enrichment and separation of water (claimed). ADVANTAGE - The hierarchical porous graphene has high adsorption rate, adsorption capacity and desorption separation efficiency when it is used for enrichment of water. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparing hierarchical hole graphene comprising providing graphene oxide aerogel and reducing the graphene oxide aerogel using a microwave reduction method to obtain the hierarchical porous graphene; and use method of hierarchical hole graphene comprising dispersing the hierarchically porous graphene in a water body containing hexahexahexanol to carry out adsorption and enrichment.