Bioprotective Respirator Assembled by Defective Carbon Nitride for Long‐Term Light Triggered Health Protection

Autor: Zhenxing Zeng, Qi Zhang, Fei Ye, Xueming Dang, Xin Jiang, Guochun Lv, Xiaojing Wang, Hong Peng, Dexin Fang, Hong Xiao, Yanzong Zhang, Ganxue Wu, Jie Mao, Munir Ahmad, Shihuai Deng
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Advanced Science, Vol 11, Iss 31, Pp n/a-n/a (2024)
Druh dokumentu: article
ISSN: 2198-3844
20240309
DOI: 10.1002/advs.202403098
Popis: Abstract Wearing face masks is the best way to stop the spread of respiratory infections. However, if masks are not sterilized, changing them too frequently can actually increase the risk of cross‐contamination. Herein, the construction of an antipathogen photocatalytic mask with carbon vacancy‐modified carbon nitride nanosheets (g‐C3N4‐VC Ns) coated on the non‐woven fabrics of the out layer of the mask, offering effective and long‐term protection against damaging pathogens when exposed to light is reported. The introduced carbon vacancies are found capable of creating energy‐disordered sites and inducing energetic electric force to overcome the Coulomb interactions between electron‐hole pairs, thus promoting the electron‐hole separation to achieve a high generation of reactive oxygen species (ROS). Thanks to its high activity in generating ROS upon exposure to light, the as‐prepared photocatalytic mask shows high pathogen sterilization performance. This, in turn, prolongs the mask's protective lifetime, decreases the need for regular replacement, and decreases medical waste production. The work demonstrated here opens new viewpoints in designing pathogens biocidal protective devices for health protection, offering significant promise in specific environment self‐protection.
Databáze: Directory of Open Access Journals
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