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首页> 外文期刊>Environmental Science & Technology >Electrospun Magnetic Nanoparticle-Decorated Nanofiber Filter and Its Applications to High-Efficiency Air Filtration
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Electrospun Magnetic Nanoparticle-Decorated Nanofiber Filter and Its Applications to High-Efficiency Air Filtration

机译：静电纺丝修饰的纳米颗粒纳米纤维滤料及其在高效空气过滤中的应用

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摘要

Filtration technology has been widely studied due to concerns about exposure to airborne dust, including metal oxide nanoparticles, which cause serious health problems. The aim of these studies has been to develop mechanisms for the continuous and efficient removal of metal oxide dusts. In this study, we introduce a novel air filtration system based on the magnetic attraction force. The filtration system is composed of a magnetic nanoparticle (MNP)-decorated nanofiber (MNP-NF) filter. Using a simple electrospinning system, we fabricated continuous and smooth electrospun nanofibers with evenly distributed Fe_3O_4 MNPs. Our electrospun MNP-NF filter exhibited high particle collection efficiency (∼97% at 300 nm particle size) compared to the control filter (w/o MNPs, ∼ 68%), with a ∼ 64% lower pressure drop (∼17 Pa) than the control filter (∼27 Pa). Finally, the filter quality factors of the MNP-NF filter were 4.7 and 11.9 times larger than those of the control filter and the conventional high-efficiency particulate air filters (>99% and ∼269 Pa), respectively. Furthermore, we successfully performed a field test of our MNP-NF filter using dust from a subway station tunnel. This work suggests that our novel MNP-NF filter can be used to facilitate effective protection against hazardous metal oxide dust in real environments.
机译：由于担心暴露于空气中的灰尘（包括金属氧化物纳米颗粒）会引起严重的健康问题，因此对过滤技术进行了广泛的研究。这些研究的目的是开发连续有效去除金属氧化物粉尘的机理。在这项研究中，我们介绍了一种基于磁性吸引力的新型空气过滤系统。过滤系统由磁性纳米颗粒（MNP）装饰的纳米纤维（MNP-NF）过滤器组成。使用简单的静电纺丝系统，我们制造了具有均匀分布的Fe_3O_4 MNP的连续且光滑的电纺纳米纤维。我们的电纺MNP-NF过滤器与对照过滤器（不包括MNP，〜68％）相比，显示出高的颗粒收集效率（在300 nm粒径下约为97％），压降降低了约64％（〜17 Pa）比控制过滤器（约27 Pa）大。最后，MNP-NF过滤器的过滤器品质因数分别是对照过滤器和常规高效颗粒空气过滤器（> 99％和〜269 Pa）的4.7和11.9倍。此外，我们使用地铁站隧道中的灰尘成功地对MNP-NF过滤器进行了现场测试。这项工作表明，我们的新型MNP-NF过滤器可用于促进在实际环境中有效防护有害金属氧化物粉尘。

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  • 来源
    《Environmental Science & Technology》 |2017年第20期|11967-11975|共9页
  • 作者

    Kim Juyoung; Chan Hong Seung; Bae Gwinam; Jung Jaehee;

  • 作者单位

    Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Seoul, South Korea,Department of Chemical Engineering, University of Seoul, Seoul, South Korea;

    Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, South Korea;

    Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Seoul, South Korea;

    Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Seoul, South Korea,Division of Energy and Environment Technology, KIST School, Korea University of Science and Technology, Seoul, South Korea,Green School, Korea University, Seoul, South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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