Preparation and characterization of high performance and conductive graphene-ag nanocomposite

Abstract EN

A simple and environmentally friendly approach for the preparation of graphene-Ag nanocomposite has been developed by gamma irradiation at room temperature.

Graphene oxide (GO) and silver ions are simultaneously reduced by the electrons generated from the radiolysis of water.

Silver nanocrystals were used to prevent the stacking of exfoliated graphene oxide and to improve its conductivity.

The obtained Ag-Graphene nanocomposites were characterized by ultraviolet–visible spectroscopy, X-ray diffraction which confirmed the successful preparation of silver/graphene nanocomposite.

Also, field emission scanning electron microscope images showed uniformly distributed Ag nanoparticles on the graphene surface.

The electrical properties of the Ag-Graphene films were analyzed by impedance spectroscopy.

These results show that Ag nanoparticles can significantly improve the electrical performance of graphene due to the intrinsic resistance change of the active material and less aggregation of the graphene nanosheets.