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Lee, Hyun-Wook
Energy Storage and Electron Microscopy Laboratory
Research Interests
  • Energy storage, secondary batteries, transmission electron microscopy, real time analysis

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Transparent air filter for high-efficiency PM2.5 capture

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Title
Transparent air filter for high-efficiency PM2.5 capture
Author
Liu, ChongHsu, Po-ChunLee, Hyun-WookYe, MengZheng, GuangyuanLiu, NianLi, WeiyangCui, Yi
Issue Date
2015-02
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.6, pp.6205
Abstract
Particulate matter (PM) pollution has raised serious concerns for public health. Although outdoor individual protection could be achieved by facial masks, indoor air usually relies on expensive and energy-intensive air-filtering devices. Here, we introduce a transparent air filter for indoor air protection through windows that uses natural passive ventilation to effectively protect the indoor air quality. By controlling the surface chemistry to enable strong PM adhesion and also the microstructure of the air filters to increase the capture possibilities, we achieve transparent, high air flow and highly effective air filters of similar to 90% transparency with >95.00% removal of PM2.5 under extreme hazardous air-quality conditions (PM2.5 mass concentration >250 mu g m(-3)). A field test in Beijing shows that the polyacrylonitrile transparent air filter has the best PM2.5 removal efficiency of 98.69% at high transmittance of similar to 77% during haze occurrence.
URI
https://scholarworks.unist.ac.kr/handle/201301/18215
URL
http://www.nature.com/ncomms/2015/150216/ncomms7205/full/ncomms7205.html
DOI
10.1038/ncomms7205
ISSN
2041-1723
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