Journal
SCIENCE CHINA-MATERIALS
Volume 62, Issue 3, Pages 423-436Publisher
SCIENCE PRESS
DOI: 10.1007/s40843-018-9320-4
Keywords
electrospinning nanofiber mat; solvent vapor annealing; air filtration; PM2.5 removal
Categories
Funding
- National Natural Science Foundation of China [21473153, 51771162]
- Support Program for the Top Young Talents of Hebei Province, China Postdoctoral Science Foundation [2015M580214]
- Research Program of the College Science & Technology of Hebei Province [ZD2018091]
- Scientific and Technological Research and Development Program of Qinhuangdao City [201701B004]
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Recently, air pollution has become more serious and started to have a dramatic effect on the health of humans in many large cities. Generally, outdoor personal protection, such as commercial masks, cannot effectively prevent the inhalation of many pollutants. Particulate matter (PM) pollutants are a particularly serious threat to human health. Here we introduce a new efficient air filtration mat that can be used for outdoor protection. The new efficient air filter's nanocomposite materials were successfully fabricated from poly(epsilon-caprolactone)/polyethylene oxide (PCL/PEO) using an electrospinning technique and solvent vapor annealing (SVA). SVA treatment endows the wrinkled fiber surface and enhances the PM2.5 capture capacity of protective masks. This nanowrinkled air filtration mat can effectively filter PM2.5 with a removal efficiency of 80.01% under seriously polluted conditions (PM2.5 particle concentration above 225 mgm(-3)). Our field test in Qinhuangdao indicated that the air filtration mat had a high PM2.5 removal efficiency under thick haze. Compared to commercial masks, the fabricated SVA-treated PCL/PEO air filter mat demonstrated a simpler and ecofriendly preparation process with excellent degradation characteristics, showing wide potential applications with a high filtration efficiency.
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