Three dimensional(3D) graphene aerogels(EGA) with interconnected networks were fabricated from graphite oxide(GO) and ethylenediamine(EDA) via chemical crosslinking method. The properties of EGA were characterized by scanning electron microscope(SEM)

transmission electron microscope(TEM) and selected area electron diffraction(SAED). Adsorption performance of the aerogel in removing diesel oil in water was investigated. The results showed that the EGA adsorption capacities rose quickly in the first 5 min

and reached adsorption equilibrium in 30 min. The kinetic analysis indicated that the EGA adsorption behavior can be accurately fitted with a pseudo second-order model

and the adsorption rate increased with the increase of temperature. The activation energy(Ea)

determined by Arrhenius law

was 23.94 kJ·mol-1

suggesting physical adsorption dominated the adsorption of diesel oil onto aerogels. The intraparticle diffusion model(IPD) fitting results revealed that the adsorption sites for aerogels consisted of external surface

large inner pore spaces and small-size pore spaces between the graphene sheets. The adsorption isotherms were well fitted with Freundlich model.