▎ 摘　　要

NOVELTY - Graphene/nanocellulose/polyethyleneimine aerogel comprises 15-50 wt.% nanocellulose and 5-15 wt.% polyethyleneimine. USE - Graphene/nanocellulose/polyethyleneimine aerogel. ADVANTAGE - The graphene/nanocellulose/polyethyleneimine aerogel is capable of adsorbing ionic dyes and has excellent mechanical properties, improves the shortcomings of insufficient mechanical properties and adsorbability of the graphene aerogel, broadens the application space as an adsorbent in different environments. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a graphene/nanocellulose/polyethyleneimine aerogel, involving: a. adding graphene oxide and nanocellulose solid in deionized water, stirring until dispersion is mixed to obtain graphene oxide/nanocellulose mixed solution, using sodium hydroxide aqueous solution to adjust mixed solution pH to be 7-10; b. adding the graphene oxide/nanocellulose mixed solution in the hydrothermal reactor, putting the hydrothermal reactor into the oven and heating for a period of time, cooling to room temperature and taking out to obtain graphene/nanofiber plain hydrogel; c. soaking the graphene/nanocellulose hydrogel in a polyethyleneimine aqueous solution to obtain a graphene/nanocellulose/polyethyleneimine hydrogel; and d. freeze-drying the graphene/nanocellulose/polyethyleneimine hydrogel with a freeze dryer to obtain product.