Photocatalyst antimicrobial technology

The meltblown cloth layer is uniquely added with antibacterial ZnO. ZnO NPs act as an antimicrobial agent through the following mechanisms:

① the formation of reactive oxygen species (ROS), which induces oxidative stress and membrane and DNA damage, resulting in bacterial death;

② dissolution of ZnO NPs into Zn2+, which interferes with enzyme, amino acid, and protein metabolisms in bacterial cells;

③ direct interaction between ZnO NPs and cell membrane through electrostatic forces that damages the membrane plasma and causes intracellular content leaks.

Schematic illustration of the antimicrobial mechanism of ZnO NPs against bacterial cells: