具有高效防潮性能的透明抗菌纳米纤维空气过滤器，用于可持续颗粒物捕集
Transparent Antibacterial Nanofiber Air Filters with Highly Efficient Moisture Resistance for Sustainable Particulate Matter Capture.
作者信息
Liu Hui, Huang Jianying, Mao Jiajun, Chen Zhong, Chen Guoqiang, Lai Yuekun
机构信息
National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), College of Chemical Engineering, Fuzhou 350116, P. R. China; National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, P. R. China; Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095, USA.
National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), College of Chemical Engineering, Fuzhou 350116, P. R. China; National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, P. R. China.
出版信息
iScience. 2019 Sep 27;19:214-223. doi: 10.1016/j.isci.2019.07.020. Epub 2019 Jul 19.
Particulate matter (PM) pollution has posed great threat to human health. This calls for versatile protection or treatment devices that are both efficient and easy to use. Herein, we have rationally designed a novel reusable bilayer fibrous filter consisting of electrospun superhydrophobic poly(methylmethacrylate)/polydimethylsiloxane fibers as the barrier for moisture ingression and superhydrophilic chitosan fibers for a PM capture efficiency of over 96% at optical transmittance of 86%. Furthermore, it could realize a high-level PM capture efficiency (>98.23%) even after 100-h test during extremely hazardous air environment (PM > 3,000 μg m) and retain a high PM removal efficiency (PM > 98.39%) after five washing cycles. Besides, such membranes possessed high antibacterial activity at 96.5% for E. coli and 95.2% for Staphylococcus aureus. As a proof-of-concept study, continuous particle removing has been successfully demonstrated on a window screen to prevent particle pollution.
颗粒物（PM）污染对人类健康构成了巨大威胁。这就需要既高效又易于使用的多功能防护或处理设备。在此，我们合理设计了一种新型可重复使用的双层纤维过滤器，它由电纺超疏水聚（甲基丙烯酸甲酯）/聚二甲基硅氧烷纤维作为防潮屏障，以及超亲水壳聚糖纤维组成，在86%的透光率下对PM的捕获效率超过96%。此外，即使在极端恶劣的空气环境（PM>3000μg/m）下经过100小时测试后，它仍能实现高水平的PM捕获效率（>98.23%），并且在经过五个洗涤循环后仍保持较高的PM去除效率（PM>98.39%）。此外，这种膜对大肠杆菌的抗菌活性高达96.5%，对金黄色葡萄球菌的抗菌活性为95.2%。作为一项概念验证研究，已成功在窗纱上展示了连续去除颗粒以防止颗粒污染的效果。
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