Facile synthesis of chitosan-MoS2 over reduced graphene oxide to improve photocatalytic degradation of methylene blue
摘要
Improving the photocatalytic properties of materials to reduce industrial wastewater is an interesting topic that needs to be further addressed by researchers. In the current study, we developed a new composite to improve the photodegradation rate of methylene blue (MB) during the photocatalytic process. For this aim, MoS2 nanoparticles were loaded over chitosan/rGO. The prepared nanocomposites were investigated with XRD, RAMAN, FESEM, TEM, and UV-Vis to identify the origins of photocatalytic improvements. FESEM findings indicate that chitosan-MoS2/rGO nanocomposite has a homogenous morphology similar to neat MoS2 with a lower charge recombination rate, suggesting significant photocatalytic efficiency for MB degradation by exposure to simulated sunlight. The chitosan-MoS2/rGO nanocomposite degraded the MB dyes with an efficiency of 93% due to its improved charge transfer mechanism along with increased surface area.
Graphical Abstract