▎ 摘　　要

NOVELTY - The preparation of three-dimensional porous graphene oxide involves using waste printer toner as raw material, carrying out oxidation using modified Hummers process to prepare oxidized toner mixture, separating oxidized toner mixture by filtration through microporous membrane, washing with deionized water 3-5 times, removing some impurities to obtain oxidized toner, ultrasonically dispersing the oxidized toner in deionized water, carrying out filtration separation through microporous membrane, washing with deionized water 3-5 times, removing impurities to obtain three-dimensional porous graphene oxide, placing three-dimensional porous graphene oxide in vacuum drying oven, and drying at 60-90 degrees C for 6-10 hours. USE - Preparation of three-dimensional porous graphene oxide. ADVANTAGE - The method enables preparation of three-dimensional porous graphene oxide, and effectively utilizes the carbon resources.