▎ 摘　　要

NOVELTY - Preparing elastic graphene aerogel comprises (i) adding graphene oxide and reducing agent into water to obtain a graphene oxide dispersion, (ii) mixing the foaming agent with the graphene oxide dispersion liquid and foaming to obtain a mixed solution, (iii) reacting the mixed solution at 70-90 degrees C for 2-12 hours and cooling to 15-35oC to obtain a graphene hydrogel, (iv) soaking the graphene hydrogel in an aqueous ammonia solution to obtain a graphene hydrogel after soaking and (v) freeze-treating the graphene hydrogel after the immersion at -55 to -10 degrees C, heating to 15-35 degrees C and drying under normal pressure. USE - The elastic graphene aerogel is useful in the field of oil-water separation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for the elastic graphene aerogel obtained by the above mention method.