▎ 摘　　要

NOVELTY - The device has a filtration layer (1) arranged at inner sides of outer coatings. Graphene coatings (2) i.e. graphite alkene material coatings, are located at an outer surface of the filtration layer. The filtration layer, the graphene coatings and support layers (3) are all located at the inner sides of the outer coatings (4). The support layers are formed on sides of the filtering layer along thickness direction. USE - Air filtration device. ADVANTAGE - The device can effectively adsorb gaseous pollutants of atmospheric pollutants, and specifically, fully adsorb partially volatile compounds such as Polycyclic Aromatic Hydrocarbon (PAH) and other pollutants such as Volatile organic compounds (VOCs), thus preventing secondary pollution. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of an air filtration device. Filtration layer (1) Graphene coatings (2) Graphene coatings and support layers (3) Outer coatings (4)