Medical protective masks with both high antibacterial activity and filtration efficiency have gained wide interest due to sporadic respiratory disease outbreaks. Previous studies have focused on improving a single function (antibacterial activity or filtration) of the mask performance. Herein, we developed silver nanoparticles-decorated PVDF membranes (AgNPs/PVDF) with both high antibacterial activity and filtration efficiency. Our results show that AgNPs/PVDF membranes have antibacterial efficiency of 99.98% and 99.86% against E. coliand S. aureus, respectively. The bacterial filtration efficiency is higher than 95%. PM0.26 filtration efficiency can be maintained above 95% after continuous filtration for 144 min. Adding AgNPs also promotes distinct hierarchical structure formation, which could improveme the filtration efficiency. This study provides a new methodology to fabricate antibacterial membranes doped with metal nanoparticles with promising applications in personal protective equipment development.
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Kang et al. (2024) studied this question.
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