Graphene-Based Nanostructured Materials for Advanced Electrochemical Water/Wastewater Treatment

Abstract

The emerging development of graphene-based electrodes is critically reviewed. These promising materials have shown to enhance the electrochemical advanced oxidation processes (EAOPs) efficiency during wastewater treatment. Through thorough investigations, the main factors responsible of the success of such cathode in undivided electrolytic cell have been identified as follow: (i) carbonaceous raw material, (ii) nanostructured-coated materials, (iii) high-porosity materials, (iv) nitrogen-doped materials. These parameters participate to the enhancement of electroactive surface area and conductivity of electrode, two main material's properties that affect its efficiency. By combining all these characteristics, graphene-based electrode opens up new exciting EAOPs setups and should bring them closer to real applications.

Photoelectrochemical reactors for treatment of water and wastewater: a review

“…The indirect oxidation mode is generally considered as the main degradation and mineralisation mechanisms for electrochemical treatment of wastewater. Both anode and cathode can play a role in this oxidation process, according to their overvoltage values -also known as overpotential values -for oxygen evolution and hydrogen evolution, respectively (Figure 1) (Panizza and Cerisola 2009;Comninellis and Chen 2010;Mousset and Zhou 2017).…”

Nanostructured electrodes for electrocatalytic advanced oxidation processes: From materials preparation to mechanisms understanding and wastewater treatment applications

“…The surface area, defined by specific surface area using BET technique or electroactive surface area using EIS method, is a decisive parameter in the ORR activity enhancement [143]. The influence of BET specific surface area (SBET) on the amount of H2O2 electrogenerated at nanostructured-based cathode materials found in literature (Table 1) has been plotted in Fig.…”