Electrospun nanofiber filters for highly efficient PM2.5 capture


With the recent increase of concern on the health impact of air pollution, there has been growing interest in filtration technologies that can effectively remove fine inhalable particles (PM2.5) in the air with diameters that are generally 2.5 µm or smaller. Among various technologies presented, nanofiber-based filters provide A simple, but effective route to rapidly capture these fine particulate matters. In this review, we briefly introduce the health hazards associated with PM2.5 and highlight the importance of air filtration technology with particular emphasis on nanofiber-based filters prepared via electrospinning. Then, we summarize various fiber materials and additives utilized in electrospun nanofibers to enhance the filtration efficacy. Furthermore, we highlight some of the recent advances in the materials design of electrospun nanofiber filters for PM2.5 removal and discuss the current issues and future perspectives.

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This work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2018R1D1A1B07041102), and POSCO Green Science Program.

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Correspondence to Hyomin Lee.

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Hyomin Lee received his B.S. in Chemical and Biological Engineering from Seoul National University (SNU) in 2009. He obtained Ph.D. degree in Chemical Engineering from Massachusetts Institute of Technology (MIT) in 2014. From 2014 to 2017, he worked as a postdoctoral researcher in John A. Paulson School of Engineering and Applied Sciences at Harvard University. In 2017, he joined Pohang University of Science and Technology (POSTECH), where he is currently an assistant professor in the department of chemical engineering. He has been recognized with several awards including AIChE Graduate Student Award (2014), KSIEC New Scientist Award (2018). His research focuses on understanding and controlling the structure and dynamics of soft matter at interfaces and designing new functional materials.

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Nam, C., Lee, S., Ryu, M. et al. Electrospun nanofiber filters for highly efficient PM2.5 capture. Korean J. Chem. Eng. 36, 1565–1574 (2019). https://doi.org/10.1007/s11814-019-0370-3

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  • Particulate Matter (PM2.5)
  • Electrospinning
  • Filter
  • Polymeric Materials
  • Nanofiber