Graphene is an interesting two-dimensional carbon sheet possessing\udsingle-layered atom thickness that confers unique physical\udand chemical properties. The pristine graphene sheets have\udsome limited applications in water purification, but the modification\udof graphene into the graphene composite by the incorporation\udof some functional groups or nanoparticles on the\udsurface extensively increases its environmental applications. Recently,\udgraphene nanocomposites have found to show very\udpromising applications in all types of water purification. The\udpresent review highlights the recent developments in the applications\udof graphene and graphene-based composites as adsorbent,\udcatalyst, photocatalyst, electrocatalyst, photoelectrocatalyst,\udand disinfection and desalination agent in\udcomprehensive water purification systems. We primarily focus\udon the environmental engineering applications of graphene\udnanocomposites as sorbent materials for the elimination of toxic\udinorganic (cationic and anionic), organic, and mixed/multiple\udpollutants, and as catalysts for the degradation of toxic organic\udcontaminants using catalytic oxidation, photocatalytic oxidation,\udelectrocatalytic oxidation, and photoelectrocatalytic oxidation.\udWe have also discussed the use and feasibility of graphene\udnanocomposites in water disinfection and desalination.\udFinally, the future challenges and perspectives are discussed.
展开▼
