Fig. 5From: Utilizing nanozymes for combating COVID-19: advancements in diagnostics, treatments, and preventative measuresCu-nanozymes for photoactive antiviral face masks. The manufacturing principle of the self-cleaning mask was as follows: the nebulizer was conceived to intermix CuNPs, shellac and pressurized air at the intersection. After solar irradiation, through photothermal effect and photocatalytic effect processes, the mask inactivates the virus and becomes self-cleaning. Created with BioRender.comBack to article page