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Kim, Gun-Ho
SoftHeat Group
Research Interests
  • Heat transfer mechanism in soft materials (e.g., plastics, animal tissues)
  • Development of thermally conductive plastics and high performance polymeric thermoelectric heat engine
  • Development of biomedical devices that use responses of animals to environmental temperature changes

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Photoactive Antiviral Face Mask with Self-Sterilization and Reusability

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Title
Photoactive Antiviral Face Mask with Self-Sterilization and Reusability
Author
Kumar, SumitKarmacharya, MamataJoshi, Shalik RamGulenko, OleksandraPark, JuheeKim, Gun-HoCho, Yoon-Kyoung
Issue Date
2020-11
Publisher
American Chemical Society
Citation
NANO LETTERS
Abstract
Since the emergence of the COVID-19 pandemic outbreak, the increasing demand and disposal of surgical masks has resulted in significant economic costs and environmental impacts. Here, we applied a dual-channel spray-assisted nanocoating hybrid of shellac/copper nanoparticles (CuNPs) to a nonwoven surgical mask, thereby increasing the hydrophobicity of the surface and repelling aqueous droplets. The resulting surface showed outstanding photoactivity (combined photocatalytic and photothermal properties) for antimicrobial action, conferring reusability and self-sterilizing ability to the masks. Under solar illumination, the temperature of this photoactive antiviral mask (PAM) rapidly increased to >70 °C, generating a high level of free radicals that disrupted the membrane of nanosized (∼100 nm) virus-like particles and made the masks self-cleaning and reusable. This PAM design can provide significant protection against the transmission of viral aerosols in the fight against the COVID-19 pandemic.
URI
https://scholarworks.unist.ac.kr/handle/201301/48842
URL
https://pubs.acs.org/doi/abs/10.1021/acs.nanolett.0c03725
DOI
10.1021/acs.nanolett.0c03725
ISSN
1530-6984
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