▎ 摘　　要

NOVELTY - Chemically-modified graphene-based multicomponent antibacterial film, is claimed. The antibacterial film by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy, dispersing carbon fibers in composite material uniformly in the graphene base, and the fibers form a three-dimensional skeleton, distributing well formed the graphene films and silver nanoparticles spherically, with the increase of amount of carbon fiber added, the nano-silver size has tendency to distribute to range below 40 nm. USE - Used as chemically-modified graphene-based multicomponent antibacterial film. ADVANTAGE - The film: has excellent broad spectrum antibacterial activity; can be designed into different thickness, shape and size; suitable in biomedical, energy, aviation and war industry fields. The method is simple, easy control and suitable for industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing chemically-modified graphene-based multicomponent antibacterial film, comprising (1) using improved method for preparing graphene oxide (GO) dispersion, (2) using concentrated nitric acid carrying out carbon fiber (CF) surface treatment, swelling the carbon fiber by alkali solution, preparing carbon fiber suspension after centrifugal washing, and mechanical stirring, (3) mixing graphene oxide dispersion liquid, deionized water and carbon fiber dispersed solution uniformly to obtain GO-CF mixed dispersion liquid, (4) dissolving silver nitrate powder in de-ionized water, slowly dropping aqueous ammonia into silver nitrate solution until the solution changing fresh colorless to obtain silver ammonia solution, (5) adding the fresh silver-ammonia solution into the GO-CF mixed dispersion liquid, stirring uniformly at certain temperature, adding glucose solution as reducing agent, allowing to stand, silver nanoparticles were hydrothermally in-situ reduced on GO and carbon fiber surfaces, followed by centrifugal washing, (6) using 300 mesh metal sieve for repeatedly filtering the GO-silver-CF colloid, filtering the CF, ensuring result is measurement standard by optical microscope observation, (7) using silicon dioxide glass slide as substrate, adding concentrated sulfuric acid and concentrated nitric acid to prepare piranha lotion, subjecting to hydrophilization treatment, and repeatedly washing using de-ionized water, (8) taking GO-silver-CF and GO-silver mixed dispersion, drop-casting onto substrate, vacuum drying at a certain temperature to obtain GO-silver-CF and GO-silver composite film, and (9) covering the glass slide area on the dried GO-silver-CF and GO-Ag film, placing composite film under high vacuum, subjecting to low temperature annealing treatment to obtain reduced graphene oxide (rGO) composite film, i.e. rGO-silver-CF and rGO-silver.