A method of reducing graphene oxide (GO), the method comprising the steps of: suspending GO and dissolving an iodide in a liquid medium, whereby the dissolved iodide partially reduces the GO to obtain a liquid composition comprising partially reduced GO (prGO) and dissolved iodide, removing liquid medium from the liquid composition to form a graphitic layer comprising prGO and iodide, and irradiating the graphitic layer with UV radiation to further reduce the prGO and provide for a reduced form of graphene oxide.