▎ 摘　　要

NOVELTY - The method involves smelting and cooling magnesium and copper particles with the purity of 99.99% in a high-frequency induction smelting furnace to obtain an alloy ingot, crushing and melting, spraying alloy liquid onto a rotating copper roller by adopting a single-roller rapid quenching method to prepare an alloy strip, and adding the alloy strip into a hydrochloric acid ethanol solution to remove alloy to obtain nano porous copper. The acid washing is carried out on the nano porous copper, washing an oxide layer off, a graphene oxide solution is spin-coated on the surface of the nano porous copper, and the nano porous copper is immediately transferred to a tubular furnace to carry out thermal reduction in the atmosphere of hydrogen and argon to obtain the reduced graphene oxide/nano porous copper composite substrate. The magnesium and copper particles are quantitatively weighed according to the percentage of constituent atoms of the target alloy. USE - Method for Preparing oxidation resistant copper-based surface enhanced Raman scattering substrate. Uses include but are not limited to biomedicine, surface science, biological sensing, food safety and trace analysis and detection. ADVANTAGE - The method is simple and easy and cost-effective. The prepared substrate surface enhanced Raman scattering capability is excellent, and has strong oxidation resistance and high stability. The obtained reduction-oxidation graphene/nano-porous copper composite substrate has excellent enhancement effect, high detection sensitivity and good air stability. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of scanning electron microscopy (SEM) image of the reduced graphene oxide/nano porous copper composite strip.