TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: The graphene oxide nanoparticles and functional solution are mixed to obtain mixture. The mixture is concentrated such that the total concentration of graphene oxide and functionalized nanoparticles is 15-25 mg/mL, to obtain functionalized three-dimensional graphene film. The graphene oxide functionalized nanoparticles are injected from top end opening, and groove is positioned from bottom, and the functionalized graphene oxide strips having continuous strip-like structure are provided to methanol solution. The functionalized graphene oxide strips are removed from the methanol solution and subjected to rolling-heating (h1), drying, rolling-heating (h2) and reduction expansion, or placed under infrared lamp to restore expansion, to obtain functionalized three-dimensional graphene film. The graphene oxide solution is concentrated at 45-60 degrees C. The rolling-heating (h1) is carried out at 45-60 degrees C and heating unit with length of 0.8-1.2 m. The rolling-heating (h2) is carried out at 300-500 degrees C and heating unit with length of 10-15 cm. The power of infrared lamp is 375 W. The reduction is carried out for 15 seconds. Preferred Composition: The mixture contains less than 1/10 graphene oxide nanoparticles. The functionalized nanoparticles comprises nanoparticles containing iron, nickel, copper, silicon, cobalt, silver, palladium, platinum and/or gold, nanoparticles comprising iron-nickel alloy, iron-copper alloy, copper-nickel alloy, iron-cobalt alloy, iron-platinum alloy, iron-palladium alloy, iron-gold alloy, palladium-platinum alloy, palladium-gold alloy, nickel-gold alloy, silver-nickel alloy, platinum-nickel alloy, gold-nickel alloy, silver-cobalt alloy, palladium-cobalt alloy, gold-cobalt alloy, palladium-silver alloy, platinum-palladium alloy and/or platinum-gold alloy, nanoparticles containing silica, ferric oxide, manganese oxide, cobalt oxide, nickel oxide, lead oxide, titania, zinc oxide, cupric oxide and/or cuprous oxide, or nanoparticles comprising iron-ferric oxide, copper-cupric oxide, copper-cuprous oxide, nickel-nickel oxide and/or lead-lead oxide, or nanoparticles comprising ferric oxide-copper oxide, cupric oxide-cuprous oxide, ferric oxide-cuprous oxide, ferric oxide-nickel oxide, ferric oxide-lead oxide, ferric oxide-titania, copper oxide-nickel oxide, copper oxide-lead oxide and/or nickel oxide-lead oxide.