Three-dimensional reduced graphene oxide decorated with iron oxide nanoparticles as efficient active material for high performance capacitive deionization electrodes

A three-dimensional reduced graphene oxide decorated with iron nanoparticles (3D rGO-Fe2O3) material a suitable porous structure was synthesised using one-step hydrothermal process in order to fabricate novel electrodes for capacitive deionization (CDI) water desalination. The morphological and structural properties of the as-synthesised compounds were characterised by scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), Raman spectroscopy (RS), X-ray diffraction (XRD) thermal gravimetric analysis (TGA). CDI electrochemically analysed cyclic voltammetry (CV) electrochemical impedance (EIS). maximum value specific capacitance 345 F g?1 achieved at 5 mV s?1 scan rate NaCl 0.1 mol L?1 solution. ion removal performance evaluated solutions different concentrations, showing electrosorption capacities as high 945 mg 11,700 (200 mmol L?1) solutions, which substantially surpasses results other carbon-based electrodes.