High-performance particulate matter including nanoscale particle removal by a self-powered air filter

Guo-Hao Zhang, Qiu-Hong Zhu, Lei Zhang, Fang Yong, Zhang Zhang, Shuang-Long Wang, You Wang, Ling He () and Guo-Hong Tao ()
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Guo-Hao Zhang: Sichuan University
Qiu-Hong Zhu: Sichuan University
Lei Zhang: Sichuan University
Fang Yong: Sichuan University
Zhang Zhang: Sichuan University
Shuang-Long Wang: Sichuan University
You Wang: Sichuan University
Ling He: Sichuan University
Guo-Hong Tao: Sichuan University

Nature Communications, 2020, vol. 11, issue 1, 1-10

Abstract: Abstract 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.

Date: 2020
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DOI: 10.1038/s41467-020-15502-7

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