BROWSE

Related Researcher

Author's Photo

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

ITEM VIEW & DOWNLOAD

Superhydrophobic and Self-Sterilizing Surgical Masks Spray-Coated with Carbon Nanotubes

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Superhydrophobic and Self-Sterilizing Surgical Masks Spray-Coated with Carbon Nanotubes
Author
Soni, RiteshJoshi, Shalik RamKarmacharya, MamataMin, HyegiKim, Shin-KwanKumar, SumitKim, Gun-HoCho, Yoon-KyoungLee, Chang Young
Issue Date
2021-08
Publisher
AMER CHEMICAL SOC
Citation
ACS APPLIED NANO MATERIALS, v.4, no.8, pp.8491 - 8499
Abstract
Coronavirus has affected the entire global community owing to its transmission through respiratory droplets. This has led to the mandatory usage of surgical masks for protection against this lethal virus in many countries. However, the currently available disposable surgical masks have limitations in terms of their hydrophobicity and reusability. Here, we report a single-step spray-coating technique for the formation of a superhydrophobic layer of single-walled carbon nanotubes (SWCNTs) on a meltblown polypropylene (PP) surgical mask. The sprayed SWCNTs form a nanospike-like architecture on the PP surface, increasing the static contact angle for water from 113.6 degrees +/- 3.0 degrees to 156.2 degrees +/- 1.8 degrees and showing superhydrophobicity for various body fluids such as urine, tears, blood, sweat, and saliva. The CNT-coated surgical masks also display an outstanding photothermal response with an increase in their surface temperature to more than 90 degrees C within 30 s of 1 sun solar illumination, confirming its self-sterilization ability. Owing to the cumulative effect of the superhydrophobicity and photothermal performance of the SWCNTs, the CNT-coated masks show 99.99% higher bactericidal performance toward Escherichia coli than pristine masks. Further, the virucidal ability of the SWCNT-coated mask, tested by using virus-like particles, was found to be almost 99% under solar illumination. As the spray-coating method is easily scalable, the nanotube-coated mask provides cost-effective personal protection against respiratory diseases.
URI
https://scholarworks.unist.ac.kr/handle/201301/54079
URL
https://pubs.acs.org/doi/10.1021/acsanm.1c01082
DOI
10.1021/acsanm.1c01082
ISSN
2574-0970
Appears in Collections:
MEN_Journal Papers
BME_Journal Papers
ECHE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU