期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 428, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2022.128239
关键词
Magnetron sputtering; Electrospinning; Moisture electroactive; Antimicrobial; Face mask
资金
- National Natural Science Foundation of China [51703103]
- Youth Innovation Science and Tech-nology Plan of Shandong Province [2020KJA013]
A bilayer composite filter medium with built-in antimicrobial activities was constructed, which exhibited remarkable performance in filtering particulate matters and killing bacteria. The composite fabric also demonstrated efficient contact sterilization function, potentially promoting the reuse of filter media.
Face mask has become an essential and effective apparatus to protect human beings from air pollution, especially the air-borne pathogens. However, most commercial face masks can hardly achieve good particulate matters (PMs) and high bactericidal efficacy concurrently. Herein, a bilayer structured composite filter medium with built-in antimicrobial activities was constructed by combining cotton woven modified by magnetron sputtered Ag/Zn coatings and electrospun poly(vinylidene fluoride)/polystyrene (PVDF/PS) nanofibers. With the benefit of external moisture, an electrical stimulation was generated inside the composite fabric and thus endowed the fabric antimicrobial function. The resultant composite fabric presented conspicuous performance for integrated air pollution control, high filtration performance towards PM0.3 (99.1%, 79.2 Pa) and exceptional interception ratio against Escherichia coli (99.64%) and Staphylococcus aureus (98.75%) within 20 min contact. The high efficiency contact sterilization function of the bilayer fabric could further potentially promote disinfection and reuse of the filter media. This work may provide a new perspective on designing high-performance face mask media for public health protection.
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