Không ngạc nhiên khi tiến bộ trong việc nghiên cứu bộ lọc không khí đến từ Trung Quốc.
Xem bài báo năm 2015 ở Nature Communications: https://rdcu.be/bcGBB
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 ~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.
Publication history
Received
Accepted
Published
DOI
Source: Transparent air filter for high-efficiency PM2.5 capture | Nature Communications