Carbon fibers assisted 3D N-doped graphene aerogel on excellent adsorption capacity and mechanical property

• CF assisted graphene aerogel (CF/N-RGO) was fabricated via self-assembly method. • The adsorption and structural stability of CF/N-RGO were simultaneously improved. • CF/N-RGO exhibited ultra-light density and high specific surface area. • CF/N-RGO showed excellent superhydrophobicity and adsorption capacity (206.38 g/g). • CF/N-RGO was compressible with excellent structural stability. In order to improve structural stability of aerogel, supported N-doped reduced graphene oxide aerogels are prepared by introducing fiber materials (biomass cellulose and carbon fibers) via self-assembly method. Thereinto, N-doped carbon fibers/reduced graphene oxide aerogel exhibits ultra-light density (7.19 mg/cm 3 ), high specific surface area (329.6 m 2 /g), excellent superhydrophobicity, high adsorption capacity (206.38 g/g), which is superior to most reported cellulose aerogels. Moreover, regardless of multiple heating or squeezing cycles, adsorption capacity of this aerogel is also more than 90 %. In addition, N-doped carbon fibers/reduced graphene oxide aerogel shows good mechanical compressive property and thermal stability, which contributes to high-valued utilization in practice.