▎ 摘　　要

NOVELTY - The mask has a mask body for covering wearer`s mouth and nose. A fastener holds the mask in place on the wearer`s face, and includes a portion that engages with the mask body and a portion that engages with the wearer. The mask body comprises an air-permeable outer layer, an inner layer located on an inner side of the mask body, and a graphene foam layer arranged in the mask body . The fastener connects the mask body to the wearer. The graphene foam layer is formed between the outer layer and the inner layer. The graphene foam layer comprises a graphene material selected from pristine graphene, graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene and chemically functionalized graphene. USE - Face mask for covering a face, a mouth, and a nose of a wearer. ADVANTAGE - The mask utilizes the graphene foam layer, which has density of 0.005-1.0 g/cm 3 and a specific surface area of 200-2,000 m 2 /g and the fastener that holds the mask in place on a wearer`s face, thus preventing the mask from falling off of the wearer. DETAILED DESCRIPTION - The graphene foam layer comprises density from 0.005 to 1.0 g/cm3 or a specific surface area from 40 to 2,600 m2 /g. The graphene foam layer comprises a specific surface area from 200 to 2,000 m2 /g or density from 0.01 to 0.5 g/cm3 .INDEPENDENT CLAIMS are also included for the following: (a) Filteration element; (b) Filtration device.