Ko, Young-Seon Joe, Yun Haeng Seo, Mihwa Lim, Kipil Hwang, Jungho Woo, Kyoungja 2024-01-20T08:33:41Z 2024-01-20T08:33:41Z 2021-09-02 2014-10-21 2050-7518 https://pubs.kist.re.kr/handle/201004/126228 There is a significant need for materials that promptly exhibit antimicrobial activity upon contact. The large-scale fabrication of monodisperse silver nanoparticle (AgNP)-decorated silica (AgNP@SiO2) hybrid particles, and their prompt and synergistic antibacterial activity against both the Gram-negative bacteria Escherichia coli and the Gram-positive bacteria Staphylococcus epidermidis on air filtration units are presented. Monodisperse aminopropyl-functionalized silica colloids (406 nm) were used as a support material and were hybridized with AgNPs using a seeding, sorting-out, and growing strategy with Ag seeds (1-2 nm) into similar to 30 nm AgNPs, successfully yielding 51 g of AgNP@SiO2 hybrid particles. Medium filter samples (glass fiber material, 4 x 4 cm(2)) were coated with AgNP@SiO2 particles and tested for antibacterial efficacy. SEM characterization of the bacterial morphology suggested prompt and synergistic antibacterial activity against both classes of bacteria. Moreover, antibacterial efficacies >99.99% for both bacteria were obtained using a filter sample with a coating areal density of 1 x 10(8) particles per cm(2). Solutions of AgNP@SiO2 at 1.3% were stable even after 8 months. The hybrid particle AgNP@SiO2 and the air filter system coated with the particles are expected to be useful for future green environment applications. English ROYAL SOC CHEMISTRY ACTIVATED CARBON-FIBERS ESCHERICHIA-COLI STAPHYLOCOCCUS-EPIDERMIDIS AEROSOL NANOPARTICLES BACILLUS-SUBTILIS AG NANOPARTICLES BACTERIA FILTERS IONS BIOAEROSOLS Prompt and synergistic antibacterial activity of silver nanoparticle-decorated silica hybrid particles on air filtration Article 10.1039/c4tb01068j 1 JOURNAL OF MATERIALS CHEMISTRY B, v.2, no.39, pp.6714 - 6722 JOURNAL OF MATERIALS CHEMISTRY B 2 39 6714 6722 scie scopus 000342856400004 2-s2.0-84906755986 Materials Science, Biomaterials Materials Science Article ACTIVATED CARBON-FIBERS ESCHERICHIA-COLI STAPHYLOCOCCUS-EPIDERMIDIS AEROSOL NANOPARTICLES BACILLUS-SUBTILIS AG NANOPARTICLES BACTERIA FILTERS IONS BIOAEROSOLS antibacterial silver nanoparticle silica hybrid particle air filter antimicrobial bacterial morphology