One-pot sonochemical synthesis of CdS-reduced graphene oxide composite and its application for photocatalytic degradation of methylene blue

Abstract

614-618A one-pot synthesis of CdS-reduced graphene oxide (RGO) composite via sonochemical reduction of graphite oxide and simultaneous CdS formation is reported. The composite is characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction spectroscopy and UV-vis absorption spectroscopy and its photocatalytic performance is evaluated for the degradation of methylene blue. Results show that in the composite the RGO nanosheets are densely decorated by CdS nanoparticles, displaying a good combination between RGO and CdS. The CdS-RGO composite exhibits enhanced photocatalytic performance for the dye degradation with a maximum removal rate of 96% under visible light irradiation due to increased light absorption intensity as well as the reduced electron-hole pair recombination in CdS