▎ 摘　　要

NOVELTY - Preparing sulfur-nitrogen co-doped graphene-based aerogel comprises preparing sulfur-nitrogen co-doped graphene hydrogel precursor by hydrothermal synthesis method using graphene oxide and thiourea as raw materials, subjecting obtained precursor to vacuum freeze-drying and then carbonizing to obtain sulfur-nitrogen co-doped graphene-based aerogel. USE - The aerogel is useful in oil-water separation (claimed). ADVANTAGE - The aerogel has super hydrophobic property and lipophilic property, excellent mechanical property, high oil absorption, organic solvent ratio and simple preparation method; and is environmentally friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for sulfur-nitrogen co-doped graphene-based aerogel obtained by above method.