Journal
NANOSCALE RESEARCH LETTERS
Volume 14, Issue 1, Pages -Publisher
SPRINGEROPEN
DOI: 10.1186/s11671-019-3199-0
Keywords
Electrospinning; PM2; 5; Nanofibers; Air filter; Removal efficiency
Funding
- National Natural Science Foundation of China [51703102]
- China Postdoctoral Science Foundation [2016 M592128]
- Natural Science Foundation of Shandong Province [ZR2016AM22]
- Shandong Medical and Health Technology Development Plan Project [2017WS033]
- Postdoctoral Scientific Research Foundation of Qingdao [2017009]
- National Natural Science Foundation of 392 China [51703102, 51973100]
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Fine particulate matter (PM) has seriously affected human life, such as affecting human health, climate, and ecological environment. Recently, many researchers use electrospinning to prepare nanofiber air filters for effective removal of fine particle matter. However, electrospinning of the polymer fibers onto the window screen uniformly is only achieved in the laboratory, and the realization of industrialization is still very challenging. Here, we report an electrospinning method using a rotating bead spinneret for large-scale electrospinning of thermoplastic polyurethane (TPU) onto conductive mesh with high productivity of 1000 m(2)/day. By changing the concentration of TPU in the polymer solution, PM2.5 removal efficiency of nanofiber-based air filter can be up to 99.654% with good optical transparency of 60%, and the contact angle and the ventilation rate of the nanofiber-based air filter is 128.5 degrees and 3480 mm/s, respectively. After 10 times of filtration, the removal efficiency is only reduced by 1.6%. This transparent air filter based on TPU nanofibers has excellent filtration efficiency and ventilation rate, which can effectively ensure indoor air quality of the residential buildings.
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