Vis-active TiO2 - rGO Photocatalysts for Advanced Wastewater Treatment

The implementation of efficient Vis-active photocatalysts, targeting water re-use, represents a priority considering the up-scaling and possible feasible candidates are the composites with metal oxide matrix and graphene derivative(s) fillers. The most efficient metal oxide matrix is titanium dioxide and coupled with the reduced graphene oxide it can develop Vis-active photocatalytic composites. This paper analyzes the performance of these composites as potential photocatalysts to be implemented at industrial scale. The properties of the TiO2 - rGO composite thin films are discussed along with the efficiencies in degrading the methylene blue standard pollutant; moreover, the stability of these thin films during the photodegradation processes is outlined correlated with the rGO filler content in the composites.