▎ 摘　　要

NOVELTY - Preparing super hydrophobic graphene aerogel comprises e.g. dispersing graphene oxide in deionized water, ultrasonic dispersing to obtain graphene oxide solution, adding dopamine and reducing agent to ascorbic acid in graphene solution, stirring under magnetic force and pouring into container and sealing, heating in oven to obtain graphene hydrogel, subjecting graphene hydrogel to soaking with deionized water, washing and performing freeze-washing to obtain frozen sample and then freeze-drying, placing freeze-dried sample in a closed vessel and then concentrating. USE - The method is useful for preparing super hydrophobic graphene aerogels (claimed). ADVANTAGE - The graphene aerogels has simple process, efficient, excellent mechanical properties, good thermal stability, high oil absorption rate and cycle stability, and product is environmentally friendly. DETAILED DESCRIPTION - Preparing super hydrophobic graphene aerogel comprises (i) dispersing graphene oxide in deionized water, ultrasonic dispersing to obtain uniform concentration of 2-8 mg/ml graphene oxide solution, (ii) adding 0-1.5 mg/ml dopamine and reducing agent to 1-16 mg/ml ascorbic acid in obtained graphene solution in step (i), stirring under magnetic force and pouring into container and sealing, heating in oven at 60-100 degrees C and insulating for 2-12 hours to obtain graphene hydrogel, (iii) subjecting graphene hydrogel obtained in step (ii) to soaking with deionized water, washing and performing freeze-washing at -196 degrees C to obtain frozen sample and then freeze-drying to obtain a freeze-dried sample, and (iv) placing freeze-dried sample obtained in step (iii) in a closed vessel containing long carbon alkoxysilane or fluorinated long carbon alkoxysilane material-ethanol solution at concentration of 1-5 wt% at 50-80 degrees C for 3-24 hours and then to obtain final product.