Choi, Jeongan Yang, Byeong Joon Bae, Gwi-Nam Jung, Jae Hee 2024-01-20T05:33:16Z 2024-01-20T05:33:16Z 2021-09-03 2015-11-18 1944-8244 https://pubs.kist.re.kr/handle/201004/124744 Recently, with the increased attention to indoor air quality, antimicrobial air filtration techniques have been studied widely to inactivate hazardous airborne microorganisms effectively. In this study, we demonstrate herbal extract incorporated (HEI) nanofibers synthesized by an electrospinning technique and their application to antimicrobial air filtration. As an antimicrobial herbal material, an ethanolic extract of Sophora flavescens, which exhibits great antibacterial activity against pathogens, was mixed with the polymer solution for the electrospinning process. We measured various characteristics of the synthesized HEI nanofibers, such as fiber morphology, fiber size distribution, and thermal stability. For application of the electrospun HEI nanofibers, we made highly effective air filters with 99.99% filtration efficiency and 99.98% antimicrobial activity against Staphylococcus epidermidis. The pressure drop across the HEI nanofiber air filter was 4.75 mmH(2)O at a face air velocity of 1.79 cm/s. These results will facilitate the implementation of electrospun HEI nanofiber techniques to control air quality and protect against hazardous airborne microorganisms. English American Chemical Society SOPHORA-FLAVESCENS NANOPARTICLES NATURAL-PRODUCT NANOPARTICLES SILVER NANOPARTICLES CARBON NANOTUBES COPPER NANOPARTICLES INDUCED INACTIVATION SOPHORAFLAVANONE-G TEA TREE BIOAEROSOLS FILTERS Herbal Extract Incorporated Nanofiber Fabricated by an Electrospinning Technique and its Application to Antimicrobial Air Filtration Article 10.1021/acsami.5b07441 1 ACS Applied Materials & Interfaces, v.7, no.45, pp.25313 - 25320 ACS Applied Materials & Interfaces 7 45 25313 25320 scie scopus 000365148600040 2-s2.0-84947976237 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article SOPHORA-FLAVESCENS NANOPARTICLES NATURAL-PRODUCT NANOPARTICLES SILVER NANOPARTICLES CARBON NANOTUBES COPPER NANOPARTICLES INDUCED INACTIVATION SOPHORAFLAVANONE-G TEA TREE BIOAEROSOLS FILTERS natural product nanoparticles aerosol process antimicrobial filter electrospinning