Ketonized Carbonitride Assembled Face Mask with Long-Term Light Triggered Antimicrobial Ability for Bioprotective...

The worldwide transmission of infectious respiratory pathogens has caused innumerable deaths and suffering, while wearing a face mask is still the most effective way to terminate the respiratory infections spread. However, the frequent mask replacement as a result of the lack of pathogen sterilization ability not only increases the cross-contamination risk but also, even worse, produces a large amount of medical waste. In this work, we report on a ketonized carbonitride functionalized bioprotective face mask with pathogen sterilization activity that can effectively produce biocidal singlet oxygen triggered by light irradiation. Ketonized carbonitride loading on the outer layer of the mask is found to be capable of generating singlet oxygen, enabling the mask with antibacterial ability. Thanks to its high pathogen inactivation activity, the as-prepared mask exhibits long-term light triggered health protection performance, which, in return, reduces medical waste production as a result of the decreased mask replacement frequency. The synthesis of a fascinating bioprotective mask provides a new viewpoint into the development of personal bioprotective devices for health protection.