High-performance particulate matter including nanoscale particle removal by a self-powered air filter.
Guo-Hao ZhangQiu-Hong ZhuLei ZhangFang YongZhang ZhangShuang-Long WangYou WangLing HeGuo-Hong TaoPublished in: Nature communications (2020)
Particulate matter (PM) pollutants, including nanoscale particles (NPs), have been considered serious threats to public health. In this work, a self-powered air filter that can be used in high-efficiency removal of PM, including NPs, is presented. An ionic liquid-polymer (ILP) composite is irregularly distributed onto a sponge network to form an ILP@MF filter. Enabled by its unique electrochemical properties, the ILP@MF filter can remove PM2.5 and PM10 with high efficiencies of 99.59% and 99.75%, respectively, after applying a low voltage. More importantly, the charged ILP@MF filter realizes a superior removal for NPs with an efficiency of 93.77%. A micro-button lithium cell or silicon-based solar panel is employed as a power supply platform to fabricate a portable and self-powered face mask, which exhibits excellent efficacy in particulate removal compared to commercial masks. This work shows a great promise for high-performance purification devices and facile mask production to remove particulate pollutants.
Keyphrases
- particulate matter
- air pollution
- ionic liquid
- public health
- high efficiency
- heavy metals
- gold nanoparticles
- oxide nanoparticles
- high throughput
- atomic force microscopy
- cell therapy
- deep learning
- highly efficient
- obstructive sleep apnea
- positive airway pressure
- risk assessment
- global health
- mass spectrometry
- sleep apnea
- simultaneous determination
- low cost