▎ 摘　　要

NOVELTY - Method for preparing a cellulose/graphene nanosheet composite aerogel involves (i) adding a cellulose material and graphite into a solvent, stripping graphite into a graphene nanosheet under the action of mechanical force and uniformly dispersing stripped graphene nanosheet in a sol formed by cellulose or its derivative and a solvent to obtain a cellulose/graphene nano composite sol, where the solvent is capable of dissolving the cellulose material and (ii) fully exchanging the composite sol in an alcohol solvent, washing with deionized water until the composite sol is neutral and drying. USE - The method is useful for preparing a cellulose/graphene nanosheet composite aerogel for absorbing ions and dyes in a solution. ADVANTAGE - The composite aerogel has excellent adsorption effect on ions and dyes in the solution. The method prepares the composite aerogel by one-step method, does not require the graphene nanosheet to be prepared in advance, has reduced preparation steps and use of solvent and improved dispersity of graphene in the cellulose sol, adopts short preparation time, avoids agglomeration of graphene and improves performance of the product. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the composite aerogel for absorbing ions and dyes in a solution.