▎ 摘　　要

NOVELTY - Preparing single-layer graphene on the surface of ultra-nano diamond comprises (i) pre-processing ultra-nano-diamond film for removing surface impurities and surface stress; (ii) forming a metal layer on the nucleation surface of the pre-treated ultra-nanometer diamond film, where the metal layer is nickel layer and copper layer on upper surface of nickel layer or metal layer is a copper-nickel alloy layer; (iii) and subjecting ultra-nano diamond film on which the metal layer has been grown to high temperature annealing to form single layer of graphene by self-organization. USE - The method is useful for preparing single-layer graphene on the surface of ultra-nano diamond. ADVANTAGE - The single-layer graphene effectively avoids impurities.