Light-Permeable Air Filter with Self-Polarized Nylon-11 Nanofibers for Enhanced Trapping of Particulate Matters

2019 ◽  
Vol 6 (5) ◽  
pp. 1801832 ◽  
Author(s):  
Daehoon Park ◽  
Minje Kim ◽  
Sol Lee ◽  
Ick-Jae Yoon ◽  
Kayoung Lee ◽  
...  
Keyword(s):  
Particulate Matters ◽  
Air Filter ◽  
Nylon 11

scholarly journals Ultrafine PVDF Nanofibers for Filtration of Air-Borne Particulate Matters: A Comprehensive Review

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1864
Author(s):  
Ayishe Sanyal ◽  
Sumit Sinha-Ray
Keyword(s):  
Ultrafine Particles ◽  
Polyvinylidene Fluoride ◽  
High Efficiency ◽  
Slip Flow ◽  
Mass Scale ◽  
Particulate Matters ◽  
Fibrous Materials ◽  
Comprehensive Overview ◽  
Air Filter ◽  
Filter Membrane

The ongoing global pandemic has bestowed high priority uponthe separation of air-borne particulate matters (PMs), aerosols, etc. using nonwoven fibrous materials, especially for face masks as a means of personal protection. Although spunbond or meltblown nonwoven materials are amongst the forerunners for polymer microfiber-based face mask or air filter development in mass scale, relatively new process of nonwoven manufacturing such as electrospinning is gaining a lot of momentum amongst the filter membrane manufacturers for its scalability of nanofiber-based filter membrane fabrication. There are several nanofiber-based face masks developing industries, which claim a very high efficiency in filtration of particulate matters (PM0.1–10) as well as other aerosols for their products. Polyvinylidene fluoride (PVDF), which is commonly known for its use of tactile sensors and energy harvesters, due to its piezoelectric property, is slowly gaining popularity among researchers and developers as an air filter material. Electrospun PVDF nanofibers can be as fine as 50 nm in mass scale, which allows the membrane to have large surface area compared to its volume, enhancing nanofiber–PM interaction. At the same time, the breathability index can be improved through these PVDF nanofiber membranes due to their architectural uniqueness that promotes slip flow around the fibers. The conductive nature of PVDF makes it advantageous as a promising electret filter allowing better capturing of ultrafine particles. This review aims to provide a comprehensive overview of such PVDF nanofiber-based filter membranes and their roles in air filtration, especially its application in filtrate of air-borne PMs.

scholarly journals Photocatalytic Activity and Filtration Performance of Hybrid TiO2-Cellulose Acetate Nanofibers for Air Filter Applications

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1331
Author(s):  
Miyeon Kwon ◽  
Juhea Kim ◽  
Juran Kim
Keyword(s):  
Cellulose Acetate ◽  
Surface Hydrophobicity ◽  
Filtration Efficiency ◽  
Particulate Matters ◽  
Photocatalytic Efficiency ◽  
Electrospinning Technique ◽  
Air Filters ◽  
Air Filter ◽  
No Removal ◽  
Home Appliance

A facile method to prepare hybrid cellulose acetate nanofibers containing TiO2 (TiO2-CA nanofibers) by emulsion electrospinning technique was developed for the denitrification and filtration of particulate matters (PMs). This work found that hybrid TiO2-CA nanofibers mainly contain the anatase form of TiO2, contributing to the photodecomposition of NO gas under UV irradiation. The TiO2-CA nanofibers also showed an excellent filtration efficiency of 99.5% for PM0.5 and a photocatalytic efficiency of 78.6% for NO removal. Furthermore, the results implied that the morphology of the TiO2-CA nanofibers, such as micro-wrinkles and protrusions, increased the surface hydrophobicity up to 140°, with the increased addition of TiO2 nanoparticles. The proposed TiO2-CA nanofibers, as a result, would be promising materials for highly efficient and sustainable air filters for industrial and home appliance systems.

scholarly journals Photocatalytic Activity and Filtration Performance of Hybrid TiO2-Cellulose Acetate Nanofibers for Air Filter Applications

2021 ◽  
Author(s):  
Miyeon Kwon ◽  
Juran Kim
Keyword(s):  
Cellulose Acetate ◽  
Surface Hydrophobicity ◽  
Filtration Efficiency ◽  
Particulate Matters ◽  
Photocatalytic Efficiency ◽  
Electrospinning Technique ◽  
Air Filters ◽  
Air Filter ◽  
No Removal ◽  
Home Appliance

Abstract A facile method to prepare hybrid cellulose acetate nanofibers containing TiO2 (TiO2 -CA nanofiber) by emulsion electrospinning technique was developed for denitrification and the filtration of particulate matters (PMs). This work found that hybrid TiO2-CA nanofibers mainly contain the anatase form of TiO2, attributing to the photodecomposition of NO gas under UV irradiation. TiO2-CA nanofibers also showed excellent filtration efficiency of 99.5% for PM0.5 and photocatalytic efficiency of 78.6% for NO removal. Furthermore, the results implied the morphology of TiO2-CA nanofibers, such as micro-wrinkles and protrusions, increased the surface hydrophobicity up to 140° with increased addition of TiO2 nanoparticles. The proposed TiO2-CA nanofibers, as a result, would be promising materials of highly efficient and sustainable air filters for industrial and home appliance systems.

VELOCITY DISTRIBUTION EFFECTS IN AIR FILTER TESTING

2001 ◽  
Vol 19 (1) ◽  
pp. 1-21 ◽  
Author(s):  
FRANK CHAMBERS ◽  
ABDEL AL-SARKHI ◽  
SHENGHONG YAO
Keyword(s):  
Velocity Distribution ◽  
Air Filter

Inorganic and organic chemical characteristics and sources of suspended particulate matters in Ulaanbaatar, Mongolia

2020 ◽  
Vol 54 (4) ◽  
pp. 267-276
Author(s):  
Koshi Yamamoto ◽  
Yuta Suzuki ◽  
Gochoobazar Oyunjargal ◽  
Hiroyuki Fukuda ◽  
Munkhtsetseg Oidov ◽  
...  
Keyword(s):  
Organic Chemical ◽  
Chemical Characteristics ◽  
Particulate Matters ◽  
Suspended Particulate ◽  
Suspended Particulate Matters ◽  
Inorganic And Organic
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