Transparent air filter for high-efficiency PM2.5 capture
By Chong Liu, Po-Chun Hsu, Hyun‐Wook Lee, Meng Ye, Gengfeng Zheng, Nian Liu, Weiyang Li, Yi Cui. Nature Communications, 2015
913 citations recorded by the source corpus.
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 ~90% transparency with >95.00% removal of PM2.5 under extreme hazardous air-quality conditions (PM2.5 mass concentration >250 μg 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 ~77% during haze occurrence. Particulate matter pollution is a public health concern in industrialized and urban areas. Here, the authors control the surface chemistry and microstructure of filtration materials to fabricate effective and transparent air filters for the capture of PM2.5pollutants.
Subfields: Automotive Engineering, Electrical and Electronic Engineering, Health, Toxicology and Mutagenesis
View Paper: https://www.semanticscholar.org/paper/67fb48c69e0fbe187f298e6763add0906bc9d6a2
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Citations in the corpus
- Silk nanofibers as high efficient and lightweight air filter (2016, neutral): “The current reported electrospun nanofibers for air filters include polymers and inorganic nanofibers such as polyacrylonitrile nanofibers [17], chitosan nanofibers [18], and silica nanofibers [19].”
- Face Masks in the New COVID-19 Normal: Materials, Testing, and Perspectives (2020, background): “Owing to the large specific surface area and highly interconnected porous network, electrospun membranes have been extensively employed for water treatment, biomedical and energy-related applications over the past decades, and they have recently attracted renewed research interest since Lui’s group ”