Scientists at Ben-Gurion University are developing a new type of air-filter that self-sterilizes and decontaminates. The nanotechnology is based on laser-induced graphene (LIG) water filters that eliminate viruses and bacteria in water. Potential applications include face masks and ventilation systems.
https://medicalxpress.com/news/2020-04-self-sterilizing-air-filtration-technologies-masks.html