Filtration and inactivation of aerosolized bacteriophage MS2 by a CNT air filter fabricated using electro-aerodynamic deposition
Filtration and inactivation of aerosolized bacteriophage MS2 by a CNT air filter fabricated using electro-aerodynamic deposition
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DOI：
10.1016/j.carbon.2014.04.019
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发表时间：
2014-08-01
期刊：
影响因子：
10.9
通讯作者：
Hwang, Jungho
中科院分区：
文献类型：
--
作者：
Park, Kyu-Tae;Hwang, Jungho
采用电空气动力沉积法在玻璃纤维空气过滤介质上沉积碳纳米管。在EAD方法中，将CNT（直径：50 nm，长度：2-3 μ m）雾化，充电，并通过喷嘴注入。在接地喷嘴和样品所在的平面电极之间外部施加电压。即使在低流速下，带电的CNT也以垂直站立的姿势沉积在样品上。在沉积实验之前，通过模拟电场、流场和颗粒轨迹进行计算以确定施加的电压。使用CNT涂覆的过滤器样品，分别使用气溶胶计数法和空斑计数法进行病毒气溶胶过滤和抗病毒试验。为此目的，用雾化器将噬菌体MS 2雾化。当涂层面密度为1.5 × 10（9）#/cm（2）时，在最大穿透粒径区（100 nm）中颗粒过滤效率增加到33.3%，CNT过滤器的抗病毒效率为92%。病毒对碳纳米管的敏感常数为0.2 cm（2）/μ g。(C)2014爱思唯尔有限公司版权所有。
Carbon nanotubes (CNTs) were coated on a sample of glass fiber air filter medium at atmospheric pressure and room temperature using electro-aerodynamic deposition (EAD). In the EAD method, CNTs (diameter: 50 nm, length: 2-3 mu m) were aerosolized, electrically charged, and injected through a nozzle. A voltage was applied externally between the ground nozzle and a planar electrode on which the sample was located. The charged CNTs were deposited on the sample in a vertically standing posture even at a low flow velocity. Before the deposition experiment, a calculation was performed to determine the applied voltage by simulating the electric field, flow field, and particle trajectory. Using CNT-coated filter samples, virus aerosol filtration and anti-viral tests were carried out using the aerosol number counting method and the plaque counting method, respectively. For this purpose, bacteriophage MS2 was aerosolized with an atomizer. The particle filtration efficiency was increased to 33.3% in the most penetration particle size zone (100 nm) and the antiviral efficiency of the CNT filter was 92% when the coating areal density was 1.5 x 10(9) #/cm(2). The susceptibility constant of virus to CNTs was 0.2 cm(2)/mu g. (C) 2014 Elsevier Ltd. All rights reserved.