Electrospun Ag‐dopedPA6multi‐stage structured nanofiber membrane with antibacterial property for oily particulate matters filtration

Abstract

AbstractOily particulate matter pollution and bacteria pose a serious threat to human health and have drawn widespread attention. Herein, an Ag‐doped nylon 6 multi‐stage structured antibacterial nanofiber membrane (PA6&Ag MSNM) for effective air filtration of fine oily particulate matters was fabricated by adding a certain amount of tetrabutylammonium hexafluorophosphate (TBAHP) and silver nitrate (AgNO3) into PA6 solution via one‐step electrospinning. The fabricated PA6&Ag MSNM is composed of coarse trunk fibers and fine branching fibers, which exhibits high filtration efficiency for oily particulate matters and low pressure drop, with an average filtration efficiency of 99.92% for oily particles of 0.20 ~ 4.59 μm and a low pressure drop of 386 Pa. In addition, the fiber membranes possesses excellent antibacterial properties due to the doping of Ag. The prepared multi‐stage electrospun nanofiber membrane may provide a versatile strategy for designing new antibacterial air filtration materials, which would have broad application prospects.