▎ 摘　　要

This work reports a simple, direct, and easy route to prepare thin films between graphene-like materials and two hexacyanometallates, based on metal cation modification in graphene oxide (GO) thin films obtained by the liquid/liquid interfacial route. The reaction between GO and Cu2+ or Fe3+ ions in aqueous solution yields GO/Cu2+ or GO/Fe3+, and the nature of the interactions between the GO and the metal cations were demonstrated by FT-IR. GO/Cu2+ and GO/Fe(3+)can be chemically reduced to reduced graphene oxide/metal nanoparticles (rGO/Cu or rGO/Fe) thin films. Both GO/metal cation or rGO/metal nanoparticles thin films were used as working electrodes for electrodeposition of their respective hexacyanometallates (Prussian blue, PB, and its copper analogue, Cu-PBA) based on a heterogeneous reaction between ferricyanide ions in the electrolyte solution and the metallic species in the electrode. The PB and Cu-PBA formation in all electrodes was confirmed by Raman spectroscopy, X-ray diffraction, cyclic voltammetry, and scanning electron microscopy, characterized as well-defined nanometric cubes homogeneously dispersed over the rGO sheets.