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, polyamide-6 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 31Pa; 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.

近来，由新型冠状病毒引起的大流行性传染病促进了空气滤膜的发展与开发，用以抵抗病毒从而并保护人体健康。这项研究的重点是具有抗菌和抗病毒特性的空气滤膜，可高效去除颗粒物（PM）。在本文中，聚酰胺6电纺纳米纤维通过氢键与银纳米颗粒固定在一起。凹凸不平的纳米粗糙表面和多层结构有助于提高捕获能力，而银纳米颗粒则具有很强的灭活细菌和病毒的能力。总之，该膜的PM2.5过滤效率高，为99.99％，低压降为31Pa。同时去除多种气溶胶污染物，例如SOx，NOx，甲基苯，L-尼古丁；对大肠杆菌（革兰氏阴性细菌）和金黄色葡萄球菌（革兰氏阳性细菌）具有优异的抗菌性能，对新型冠状病毒具有抗病毒特性，并且没有明显的细胞毒性。空气过滤材料的研究对于去除空气污染物和预防呼吸道传染病的传播具有重要意义。 

Published:2021

Journal ：SCIENCE OF THE TOTAL ENVIRONMENT

Impact Factor：7.137

Paper link: https://www.sciencedirect.com/science/article/abs/pii/S0048969721008354