Carbon nanostructures have been already used as high-capacity and selective sorbents for organic solutes in aqueous solutions. In particular, graphene oxide (GO) and reduced graphene oxide (RGO) have been used as scaffold materials for photocatalytic nanoparticles showing higher binding capacity for different water contaminants than free nanoparticles [1]. Furthermore, GO has shown photocatalytic properties and the ability of enhancing the activity of known photocatalysts as TiO2 [2]. Hybrid compounds containing ...