Bumpy structured nanofibrous membrane as a highly efficient air filter with antibacterial and antiviral property

Recently, the pandemic infectious diseases caused by coronavirus have prompted the development of air filter membranes to against infectious agents and protect human health. This research focuses on air filter membrane with antibacterial and antiviral property for high-efficiency particulate matter (PM) removal. Herein, polyamide6 electrospun nanofibers were anchored with silver nanoparticles through hydrogen-bond. Bumpy nanorough surface and multilevel structure contribute to improve capture capacity, and silver nanoparticles provide a strong ability to inactivate bacteria and virus. In conclusion, this membrane exhibits high PM2.5 filtration efficiency of 99.99% and low pressure drop of 31 Pa; simultaneous removal of multiple aerosol pollutants, e.g., SOx, NOx, methylbenzene, L-Nicotine; superior antibacterial performance against Escherichia coli (Gram negative bacteria) and Staphylococcus aureus (Gram positive bacteria), antiviral property against Porcine Deltacoronavirus and not significant cytotoxicity. Research of air filtration material is important to remove air pollutants and to prevent infection and spread of respiratory infectious diseases. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

The research focuses on developing air filter membranes with antibacterial and antiviral properties for high-efficiency particulate matter removal, utilizing silver nanoparticles and a special structure to enhance capture capacity. The membrane exhibits high filtration efficiency and antibacterial performance, providing a potential solution for removing air pollutants and preventing the spread of respiratory infectious diseases.