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Lu Yang,Ying Zhang,Xianjin Hu,Bing-Chiuan Shiu,Ching-Wen Lou,Jia-Horng Lin,Ting-Ting Li 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-
Drug-resistant pathogens pose significant pressures and challenges for medical protective materials withhighly effective antibacterial/antiviral and rechargeable properties. In this study, a clean, rechargeablephotodynamic antibacterial/antiviral strategy was proposed after nanofibrous membranes were graftedby photosensitive 4,4, -terephthalic di-phthalic anhydride (TDPA) and natural polyphenol chlorogenicacid (CA) antibacterial agent. The resultant membrane released the maximumOH and H2O2 capacitiesof 6188.56 lg/g and 842.00 lg/g, respectively, exhibited the storage antibacterial stability even storedfor 30 days in the dark. After seven quenching, the charging capacity retained more than 70% of the original. The antibacterial efficiency of the membrane showed more than 99%. In addition, the antibacterialefficiency decreased by only 3% after water washing. Moreover, it demonstrated an excellent antiviralproperty whose antiviral activity against H3N2 achieved 3.6 PFU/mL. This daylight-driven rechargeablenanofibrous membrane can be used to develop reusable medical protective materials with rechargeableantibacterial and antiviral efficiency.
Jia-Horng Lin,Lu Yang,Xianjin Hu,Haokai Peng,Haitao Ren,Ting-Ting Li,Ching-Wen Lou 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
Bacterial infection is one of the major threats to human health worldwide, posing a great challenge to thedevelopment of medical protective materials with efficient filtration and long-lasting antimicrobial properties. In this study, electrospinning technology and non-woven fabrics were combined to construct amicro/nano-structured photodynamic rechargeable and storable antibacterial filtration composite membrane. The filtration efficiency of the composite membrane is as high as 99.99% for 0.5–5 lm particles,and the resistance pressure drop is 85 Pa. In addition, the release of OH and H2O2 from the compositefilm reached 5326.16 lg/g and 711.93 lg/g, respectively. After 7 cycles of quenching, the charging capacityretains more than 70 % of the original. It showed good antimicrobial properties even when storedunder dark conditions for one month. The bactericidal efficiency of the composite membrane againstE. coli and S. aureus exceeded 99% under both dark and light conditions. The development of this simpleand clean micro/nanofiber membrane provides a new idea for exploring photoactive antimicrobial andfiltration materials for medical protection.