▎ 摘　　要

NOVELTY - A three-dimensional porous cellulose-based composite material comprises 0.01-99.99 wt.% graphene oxide and 0.01-99.99 wt.% cellulose solution. USE - Three-dimensional porous cellulose-based composite material. ADVANTAGE - The method is low-cost, simple, and easy. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of three-dimensional porous cellulose-based composite material comprising mixing graphene oxide and cellulose solution, performing shear dispersion for 2-8 hours, adding flocculant, washing flocs twice or more with deionized water to obtain hydrogel, freezing with liquid nitrogen for 0.5-6 hours, and lyophilizing at - 45-55 degrees C for 45-50 hours.