title: Fabrication of an anti-viral air filter with SiO₂-Ag nanoparticles and performance evaluation in a continuous airflow condition.
abstract: In this study, SiO2 nanoparticles surface coated with Ag nanoparticles (SA particles) were fabricated to coat a medium air filter. The pressure drop, filtration efficiency, and anti-viral ability of the filter were evaluated against aerosolized bacteriophage MS2 in a continuous air flow condition. A mathematical approach was developed to measure the anti-viral ability of the filter with various virus deposition times. Moreover, two quality factors based on the anti-viral ability of the filter, and a traditional quality factor based on filtration efficiency, were calculated. The filtration efficiency and pressure drop increased with decreasing media velocity and with increasing SA particle coating level. The anti-viral efficiency also increased with increasing SA particle coating level, and decreased by with increasing virus deposition time. Consequently, SA particle coating on a filter does not have significant effects on filtration quality, and there is an optimal coating level to produce the highest anti-viral quality.
authors.affiliation: School of Mechanical Engineering, Yonsei University, Seoul 120-749, Republic of Korea. Electronic address: kazamajo@nate.com.
authors.forename: Yun Haeng
authors.initials: YH
authors.lastname: Joe
authors.affiliation: Molecular Recognition Research Center, Korea Institute of Science and Technology, Cheongryang, Seoul 130-650, Republic of Korea. Electronic address: kjwoo@kist.re.kr.
authors.forename: Kyoungja
authors.initials: K
authors.lastname: Woo
authors.affiliation: School of Mechanical Engineering, Yonsei University, Seoul 120-749, Republic of Korea. Electronic address: hwangjh@yonsei.ac.kr.
authors.forename: Jungho
authors.initials: J
authors.lastname: Hwang
mesh_terms: D061808:Air Filters; D000391:Air Microbiology; D000998:Antiviral Agents; D017909:Levivirus; D053768:Metal Nanoparticles; D012822:Silicon Dioxide; D012834:Silver
chemical_list: D000998:Antiviral Agents; D012834:Silver; D012822:Silicon Dioxide
keywords: Airborne virus; Anti-viral air filter; Filter quality; SiO(2)–Ag nanoparticle