期刊
ACS NANO
卷 14, 期 9, 页码 12045-12053出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c05330
关键词
COVID-19; laser-induced graphene; bactericidal; mask; self-reporting
类别
资金
- CityU New Research Initiatives/Infrastructure Support from Central [APRC-9610426]
- State Key Laboratory of Marine Pollution (SKLMP) Seed Collaborative Research Fund
- Nankai University
Wearing face masks has been widely recommended to contain respiratory virus diseases, yet the improper use of masks poses a threat of jeopardizing the protection effect. We here identified the bacteria viability on common face masks and found that the majority of bacteria (90%) remain alive after 8 h. Using laser-induced graphene (LIG), the inhibition rate improves to similar to 81%. Combined with the photothermal effect, 99.998% bacterial killing efficiency could be attained within 10 min. For aerosolized bacteria, LIG also showed superior antibacterial capacity. The LIG can be converted from a diversity of carbon precursors including biomaterials, which eases the supply stress and environmental pressure amid an outbreak. In addition, self-reporting of mask conditions is feasible using the moisture-induced electricity from gradient graphene. Our results improve the safe use of masks and benefit the environment.
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