Porous Reduced Graphene Oxide/Single-Walled CarbonNanotube Film as Freestanding and Flexible Electrode Materials forElectrosorption of Organic Dye

Electrosorption is an electrochemically enhanced adsorption, which is only few researches reported the application of this technology for enhanced removal of organic pollutants. Herein, we report a kind of freestanding and flexible porous reduced graphene oxide/single-walled carbon nanotubes (prGO/SWCNTs) film as electrode material for electrosorption of organic dye. The success of this work relies on the simultaneous integration of graphene and single-walled carbon nanotubes (SWCNTs) into freestanding film and the use of PS to generate macropores to create an all carbon-based flexible electrode with excellent electrochemical properties. The film possesses highly crumpled surface and 3D interconnected porous internal structure, which could promote the adsorption and diffusion of ions. The film also shows good flexibility, mechanical strength, electrical conductivity and hydrophilic nature. Upon used as freestanding electrode, the film exhibits excellent adsorption capacity and good recyclability for methy...