Filtration of viral aerosols via a hybrid carbon nanotube active filter

Exposure to expired particles and droplets carrying infectious viruses is a primary transmission pathway for respiratory diseases. Removal of via filtration from volume can drastically reduce the exposure viruses, but may remain active on surfaces as potential resuspension or fomite risks. Here, we report development macroscopic carbon nanotube air filters synthesized using ultra-thin electrically conductive membranes, mechanically supported by porous polyester backing. Filtration efficiencies were measured up 99.999%, while materials with low areal density (0.1 g m?2) exhibited pressure drops comparable commercial High-Efficiency Particulate Air (HEPA) filters. These are actively self-sanitized thermal flashes resistive heating temperatures above 80 °C within seconds less. Such proven achieve full deactivation betacoronavirus an adeno-associated virus retained filter surfaces. A unit prototype equipped CNT module (?1.2 m2) was shown purification 99% room 10 min at 26 changes per hour.