Background: Heterojunction interface effect and wide light absorption are attracting many attentions
for environmental application. Reduced Graphene Oxide (RGO)/semiconductor hybrids have
showed very high photocatalytic activity than single one. RGO/CuS hybrids should be a competitive material
with highly photocatalytic activity.
Objective: This work focused on the synthesis and photocatalytic activity of the CuS nanoparticles composited
with Reduced Graphene Oxide (RGO) and the roles of various operation parameters on the photocatalyric
activity of the hybrids.
Method: The RGO/CuS nanohybrids were synthesized by chemical solution reaction and characterized by
various techniques to understand microstructural, physchemical, and photocatalytic properties.
Results: The CuS nanocrystallines were uniform combined on the RGO surface. The CuS nanoparticles
showed narrow bandgap that further narrowed as increasing rGO/CuS ratio. The CuS nanopartiles showed
excellent photocatalytic activities. Incorporating RGO further enhanced the activities. Moreover, the increase
in RGO/CuS ratio and decrease in initial solution pH also enhanced the activities. The higher activities
of the hybrids were ascribed to the good carrier transfer at heterojunction interface that was confirmed
by band energy level calculation and visible photoluminescence weakened with increasing
RGO/CuS. The present article discussed some important patents related to CuS and its hybrids materials.
Conclusion: RGO/CuS nanohybrids are promising photocatalytic materials in application of environmental