▎ 摘　　要

NOVELTY - Preparing water purifying device filter core based on multilayer graphene continuous film comprises (a) placing metal sheet under the atmosphere of non-oxidizing gas and protective gas, annealing, (b) introducing carbon-containing gas into metal sheet, reacting, cooling to obtain metal sheet covering multiple layers graphene continuous membrane, (c) dissolving metal sheet with iron chloride solution to obtain complete multi-layer graphene continuous membranes suspended in solution, (d) cleaning membrane in deionized water, drying, (e) using adhesive tape to remove membranes from the metal sheets, using chemical reagent to remove adhesive tape, (f) placing multi-layered graphene constant membrane in the ozone environment, placing multi-layer graphene oxide continuous film between two layers of polypropylene cotton or filter materials e.g. non-woven fabrics, and placing it between two layers of stainless steel filter screens to make a filter core for water purification equipment. USE - The method is useful for preparing water purifying device filter core based on multilayer graphene continuous film. Uses include but are not limited to water purification of water for family and office, sewage treatment of river and lake and factory, and seawater desalination. ADVANTAGE - The method is simple and easy, and has high repetition degree. The continuous film of water purifying device filter core can effectively remove various pollutants, so as to obtain pure direct drinking water. The multi-layer oxidized graphene continuous film formed after oxidation has high selectivity passing ability, it can improve the capability of purifying water quality, improve the quality of household and office water, and it can be used for sewage treatment and seawater desalination. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the water purifying device filter core based on multilayer oxidation graphene continuous film (Drawing includes non-English language text).