Layer-by-layer assembly of graphene and gold nanoparticles by vacuum filtration and spontaneous reduction of gold ions

摘要

Layer-by-layer films comprised of alternating graphene and gold nanoparticle layers are readily produced by the two-step procedure involving the use of vacuum filtration of a reduced graphene oxide solution to fabricate the graphene thin film on the quartz substrate, followed by gold nanoparticle formation by spontaneous reduction of gold ions in a gold salt solution on the graphene films.rnGraphene and its derivatives have attracted considerable attention in recent years because of their unique physical properties. Owing to their two-dimensional plate-like structures, graphene and bilayers containing graphene are zero-gap semiconductors that exhibit larger aerial overlap than carbon nanotubes. It has been reported that hybridization of graphene with functional nanomaterials usually enhances the attributes of each of the components, as reflected in electrical, thermal, chemical, and mechanical properties.