ELECTRICAL AND THERMAL CONDUCTIVITIES OF AU NANOPARTICLE DECORATED GRAPHENE NANOPLATELET 'PAPER'

摘要

Numerous research efforts are underway directed at discovering the superior and unique properties of single layer graphene and multilayer graphene nanoplatelets. Typical methods to synthesize metal nanoparticle on graphene surface involve covalent functionalization of graphene surface to induce anchoring sites for the metal precursor and subsequent attachment of the reduced nanoparticles to the surface. This approach results in the disruption of the sp2 bonded carbon atoms in the basal plane which leads to reduced transport properties of the graphene because of additional scattering sites. Another widely adopted technique involves nanoparticle growth on non-covalently functionalized graphene surfaces, which preserves the intrinsic properties of graphene nanosheets thanks to the minimum chemical perturbation of the basal planes. Other techniques of metal nanoparticle decoration on graphitic nanostructure include electrodeposition, evaporation, solventless bulk synthesis and etc. While these methods have some processing advantages over solution-phase techniques, they are usually quite expensive and energy intensive.