▎ 摘　　要

NOVELTY - A filtration device (1) consists of active layer(s) (2) comprising graphene and/or graphene oxide, and antimicrobial composite(s) (3) comprising metallic silver and metallic ruthenium. USE - Filtration device is used in filtration system (claimed) e.g. carbon filter system used for capturing and killing pathogens such as bacteria e.g. Escherichia coli Staphylococcus aureus, Pseudomonas aeruginosa, Enterococcus faecium and Legionella, virus, fungi and spurs from air and water, preventing fuel biodeterioration, and removing small amounts of water from hydrocarbon fuels. Uses include but are not limited to filtration membrane, air filter, water filter, respirator masks, surgical masks, gloves, gowns, drapes, and facial masks. ADVANTAGE - The filtration device is cost-effective, efficient and lightweight, has high specific surface area for capturing pathogens, does not release poisonous substances such as silver or copper ions, does not require energy or heating for disinfection, does not require special handling dressings or storage conditions, and effectively captures and quickly destroys pathogens, prevents infestation by microorganisms and attachment or permanent deposition of biomolecules such as DNA, RNA or proteins and allows filter material to flow at high rates due to larger pores compared to microfiltration applications. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of the filtration device, which involves providing substrate(s), applying the active layer(s) onto the surface of the substrate (A), and applying the antimicrobial composite(s) onto at least a portion of the surface of the substrate (A) and the active layer, or on portion(s) of the substrate (B); and (2) filter system, which consists of at least 2 substrates or at least 2 sides of the same substrate. The side(s) of the substrates is an active side (a1) that is brought together into direct contact with another active side (a2). The active side(s) (a1) is partially or fully covered with graphene and/or graphene oxide and active side(s) (a2) is partially or fully coated by the antimicrobial composite. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the filtration device as depth filter. Filtration device (1) Active layer (2) Antimicrobial composite (3) Microorganisms (4)