▎ 摘　　要

NOVELTY - Preparing lipophilic and hydrophobic graphene aerogel comprises soaking a graphene aerogel in a hydrophobic modifier containing a silane group. USE - The method is useful for preparing lipophilic and hydrophobic graphene aerogel for separating oil and water (all claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the lipophilic and hydrophobic graphene aerogel, comprising (i) uniformly dispersing graphene oxide and a reducing agent in water to obtain a graphene oxide dispersion, (ii) mixing the dispersion with a blowing agent, and stirring to obtain a mixed foam, (iii) reacting the foam at 60-100 degrees C for 2-12 hours, and cooling to 15-35 degrees C to obtain a graphene hydrogel, (iv) placing the graphene hydrogel in 1-20 vol.% aqueous solution of ethanol, soaking for 10-48 hours, and washing to obtain a washed graphene hydrogel, and (v) freezing and treating the washed graphene hydrogel at - 60-- 10 degrees C, taking out, heating to 15-35 degrees C, and drying under normal pressure.