6 MeV energy electron beam assisted synthesis of Ag-rGO nanocomposite and its photocatalytic activity

摘要

Electron beam assisted method has been employed for the synthesis of silver-reduced graphene oxide (Ag-rGO) nanocomposite in the presence of isopropyl alcohol and polyvinyl pyrrolidine. The decoration of face centered cubic silver nanoparticles (AgNPs) of size 8 nm on reduced graphene oxide has been confirmed by UV-visible spectroscopy, X-ray Diffractogram and Transmission electron microscopy. Raman spectra showed the increase in the disorder parameter (I-D/I-G) of Ag-rGO after electron irradiation due to the formation of large number of small sp(2) domains. Moreover, as an application of the synthesized Ag-rGO sample showed an enhanced photo-catalytic degradation of methylene blue compared to graphene oxide, rGO and AgNPs under sunlight. (C) 2015 Elsevier B.V. All rights reserved.