▎ 摘　　要

We have demonstrated an environmentally friendly and efficient route for the preparation of functionalized multi-layer graphene-coated copper nanoparticles by a one-step wire explosion process in isopropyl alcohol. The morphology and particle size of the nanoparticles were characterized by high-resolution transmission electron microscopy and dynamic light scattering. The structure and physiochemical nature of the products were investigated using Fourier transform infrared spectroscopy and X-ray powder diffraction. The results of Fourier transform infrared spectroscopy and Raman spectroscopy showed that functionalized graphite readily oxidized to form epoxide, carboxyl, and hydroxyl groups that were chemically bonded to the graphene. High-resolution transmission electron microscopy showed that graphene layers were present with between 3 to 10 layers in thickness. The X-ray powder diffraction results showed high intensity peaks at 43.36 degrees (111), 50.52 degrees (200), and 74.0 degrees (220), corresponding to the crystal structure of the face centered cubic phase of copper. The stability of functionalized multi-layer graphene-coated copper nanoparticles was confirmed by zeta-potential and Turbiscan analysis. The results indicated that during explosion in isopropyl alcohol, functionalized multi-layer graphene-coated copper nanoparticles greatly affect the stability of the dispersion. This study confirmed the dispersion behavior of functionalized multi-layer graphene-coated copper nanoparticles and showed that their properties depend on the functional groups generated during the wire explosion method when carried out in isopropyl alcohol.