Fig. 2. Schematic illustration representing (a) nanocomposite coating and individual components of a surgical mask, (b) viral disinfection via photocatalytic, photo-assisted heat treatment, and hydrophobic self-sterilization operations after sunlight illumination, and (c) digital scans (left) and scanning electron microscopy (SEM, right) results of the uncoated surgical mask (top) and photoactive mask (PAM, bottom) with E. coli after exposure to solar light for 24 h. Reproduced with permission from ref. 61, copyright American Chemical Society, 2020.
