▎ 摘　　要

NOVELTY - Preparing graphene-based composite gas gel, comprises (i) preparing nano-oxide precursor spinning solution, and electrospinning the nano-oxide precursor spinning solution to obtain nano-oxide fiber film, (ii) calcining the nano-oxide fiber film prepared in step (i), homogeneously crushing, and then ultrasonicating to obtain short ceramic fibers, and (iii) mixing the short ceramic fibers with graphene oxide to form solution, and then ultrasonic treating, and bidirectional freezing and drying to obtain final product. USE - The graphene-based composite airgel is useful in adsorption of oil slicks on water, sewage treatment, dye adsorption and heavy metal adsorption (claimed). ADVANTAGE - The method: utilizes nano-oxide fibers, which can enhance the mechanical strength of the aerogel; is easy to operate, low cost and simple preparation process and is suitable for large-scale preparation. The graphene oxide composite airgel has high compressibility and scalability at the same time.