Electrostatic Transparent Air Filter Membranes Composed of Metallized Microfibers for Particulate Removal

Min Woo Kim, Seongpil An, Hyunjun Seok, Suk Goo Yoon, Alexander L. Yarin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Particulate matter (PM) from ever-increasing industrialization poses a great public health risk. Although fiber-based filters are used effectively to block PM, filters with high packing densities suffer from excessive pressure drops. Electret filters bypass intermediate- or large-sized particles and thus capture only small particles, the motion of which can be influenced by weak electrostatic fields. In this study, we demonstrate the fabrication of metallized fibers that produce intense electric fields, thereby enabling capture of PMs of a variety of sizes produced by burning incense. The filter consisting of these metallized fibers effectively removes moving particles from air. An electricity-driven filter is relatively thin and has a low packing density, making it light, portable, transparent, and inexpensive. The sizes of the pores between the metallized fibers are readily controlled by manipulating the electrospinning and electroplating times. Sufficiently large pores permit efficient airflow and thus increase permeability without risking an excessive pressure drop. The metallized fiber filter is washable and thus reusable. In this study, a PM removal rate of >97% was recorded using a filter designed under optimal conditions.

Original languageEnglish
Pages (from-to)26323-26332
Number of pages10
JournalACS Applied Materials and Interfaces
Volume11
Issue number29
DOIs
Publication statusPublished - 2019 Jul 24

Fingerprint

Air filters
Electrostatics
Particulate Matter
Membranes
Fibers
Pressure drop
Electric fields
Public risks
Electrets
Health risks
Electrospinning
Electroplating
Public health
Electricity
Fabrication
Air

Keywords

  • air filtration
  • electrostatic attraction
  • metallized microfibers
  • particulate matter
  • reusable filter

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Electrostatic Transparent Air Filter Membranes Composed of Metallized Microfibers for Particulate Removal. / Kim, Min Woo; An, Seongpil; Seok, Hyunjun; Yoon, Suk Goo; Yarin, Alexander L.

In: ACS Applied Materials and Interfaces, Vol. 11, No. 29, 24.07.2019, p. 26323-26332.

Research output: Contribution to journalArticle

Kim, Min Woo ; An, Seongpil ; Seok, Hyunjun ; Yoon, Suk Goo ; Yarin, Alexander L. / Electrostatic Transparent Air Filter Membranes Composed of Metallized Microfibers for Particulate Removal. In: ACS Applied Materials and Interfaces. 2019 ; Vol. 11, No. 29. pp. 26323-26332.
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