1. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China 2. College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou 311300, China
It is still a challenge to prepare a water- and polymer-based electrospun air filter film with high efficiency filtration, low pressure drop, and good mechanical properties. To address this issue, polyvinyl alcohol (PVA) was employed as the main material, mixing polyethyleneimine (PEI), bamboo-based activated carbon (BAC) and cellulose nanocrystal (CNC) to construct the air filter film by electrostatic electrospinning. In this system, the negatively charged BAC and CNC are fixed in the system through bonding with the positively charged PEI, showing a double adsorption effect. One is the mechanical filtration of the porous network structure constructed by PVA@PEI electrospun nanofibers, and the other is the electrostatic adsorption of PM2.5 on the surface of BAC and CNC. It is significant that the resulting composite air filter displays a high filtration efficiency of 95.86%, a pressure drop of only 59 Pa, and good thermal stability. Moreover, the introduced methyltrimethoxysilane (MTMS) endows it with good water-resistance. Given these excellent performances, this system can provide theoretical and technical references for the development of water- and polymer-based electrospun air filter film.
J, Lelieveld J S, Evans M, Fnais et al.. The contribution of outdoor air pollution sources to premature mortality on a global scale.Nature, 2015, 525(7569): 367–371 https://doi.org/10.1038/nature15371
2
D Y H, Pui S C, Chen Z Zuo . PM2.5 in China: measurements, sources, visibility and health effects, and mitigation.Particuology, 2014, 13: 1–26 https://doi.org/10.1016/j.partic.2013.11.001
3
M N, Anwar M, Shabbir E, Tahir et al.. Emerging challenges of air pollution and particulate matter in China, India, and Pakistan and mitigating solutions.Journal of Hazardous Materials, 2021, 416: 125851 https://doi.org/10.1016/j.jhazmat.2021.125851
4
D, Yang Z, Liu P, Yang et al.. A curtain purification system based on a rabbit fur-based rotating triboelectric nanogenerator for efficient photocatalytic degradation of volatile organic compounds.Nanoscale, 2023, 15(14): 6709–6721 https://doi.org/10.1039/D3NR00507K
5
C, Zhu F, Yang T, Xue et al.. Metal-organic framework decorated polyimide nanofiber aerogels for efficient high-temperature particulate matter removal.Separation and Purification Technology, 2022, 300: 121881 https://doi.org/10.1016/j.seppur.2022.121881
6
K, Sohara K, Yamauchi X, Sun et al.. Photocatalytic degradation of polycyclic aromatic hydrocarbons in fine particulate matter (PM2.5) collected on TiO2-supporting quartz fibre filters.Catalysts, 2021, 11(3): 400 https://doi.org/10.3390/catal11030400
7
K, Shiraki H, Yamada Y, Yoshida et al.. Improved photocatalytic air cleaner with decomposition of aldehyde and aerosol-associated influenza virus infectivity in indoor air.Aerosol and Air Quality Research, 2017, 17(11): 2901–2912 https://doi.org/10.4209/aaqr.2017.06.0220
8
P, Sukchai S, Wanwong J Wootthikanokkhan . Electrospun cellulose air filter coated with zeolitic imidazolate frameworks (ZIFs) for efficient particulate matter removal: effect of coated ZIFs on filtration performance.Fibers and Polymers, 2022, 23(5): 1206–1216 https://doi.org/10.1007/s12221-022-4403-x
9
H J, Kim Y J, Kim Y J, Seo et al.. Hybrid bead air filters with low pressure drops at a high flow rate for the removal of particulate matter and HCHO.Polymers, 2022, 14(3): 422 https://doi.org/10.3390/polym14030422
10
H, Zhang J, Liu X, Zhang et al.. Design of electret polypropylene melt blown air filtration material containing nucleating agent for effective PM2.5 capture.RSC Advances, 2018, 8(15): 7932–7941 https://doi.org/10.1039/C7RA10916D
11
C, Liu Z, Dai B, He et al.. The effect of temperature and humidity on the filtration performance of electret melt-blown nonwovens.Materials, 2020, 13(21): 4774 https://doi.org/10.3390/ma13214774
12
J, Li F, Gao L Q, Liu et al.. Needleless electro-spun nanofibers used for filtration of small particles.Express Polymer Letters, 2013, 7(8): 683–689 https://doi.org/10.3144/expresspolymlett.2013.65
13
J, Ryu J J, Kim H, Byeon et al.. Removal of fine particulate matter (PM2.5) via atmospheric humidity caused by evapotranspiration.Environmental Pollution, 2019, 245: 253–259 https://doi.org/10.1016/j.envpol.2018.11.004
14
J, Chen Z, Zhou Y, Miao et al.. Preparation of CS@BAC composite aerogel with excellent flame-retardant performance, good filtration for PM2.5 and strong adsorption for formaldehyde.Process Safety and Environmental Protection, 2023, 173: 354–365 https://doi.org/10.1016/j.psep.2023.03.019
15
C L, Li W Z, Song D J, Sun et al.. A self-priming air filtration system based on triboelectric nanogenerator for active air purification.Chemical Engineering Journal, 2023, 452: 139428 https://doi.org/10.1016/j.cej.2022.139428
16
K, Zhao C, Ren Y, Lu et al.. Cellulose nanofibril/PVA/bamboo activated charcoal aerogel sheet with excellent capture for PM2.5 and thermal stability.Carbohydrate Polymers, 2022, 291: 119625 https://doi.org/10.1016/j.carbpol.2022.119625
17
S, Biranje P, Madiwale R V Adivarekar . Electrospinning of chitosan/PVA nanofibrous membrane at ultralow solvent concentration.Journal of Polymer Research, 2017, 24(6): 92 https://doi.org/10.1007/s10965-017-1238-z
18
W, Han D, Rao H, Gao et al.. Green-solvent-processable biodegradable poly(lactic acid) nanofibrous membranes with bead-on-string structure for effective air filtration: “Kill two birds with one stone”.Nano Energy, 2022, 97: 107237 https://doi.org/10.1016/j.nanoen.2022.107237
19
A, Rajak D A, Hapidin F, Iskandar et al.. Controlled morphology of electrospun nanofibers from waste expanded polystyrene for aerosol filtration.Nanotechnology, 2019, 30(42): 425602 https://doi.org/10.1088/1361-6528/ab2e3b
20
G, Yan Z, Yang J, Li et al.. Multi-unit needleless electrospinning for one-step construction of 3D waterproof MF-PVA nanofibrous membranes as high-performance air filters.Small, 2023, 19(7): 2206403 https://doi.org/10.1002/smll.202206403
21
A I, Yardimci M, Kayhan O Tarhan . Polyacrylonitrile (PAN)/polyvinyl alcohol (PVA) electrospun nanofibrous membranes synthesis, characterizations, and their air permeability properties.Journal of Macromolecular Science Part B: Physics, 2022, 61(10–11): 1426–1435 https://doi.org/10.1080/00222348.2023.2187133
22
Q, Wang O, Yildiz A, Li et al.. High temperature carbon nanotube — nanofiber hybrid filters.Separation and Purification Technology, 2020, 236: 116255 https://doi.org/10.1016/j.seppur.2019.116255
23
M Q, Khan D, Kharaghani S, Ullah et al.. Self-cleaning properties of electrospun PVA/TiO2 and PVA/ZnO nanofibers composites.Nanomaterials, 2018, 8(9): 644 https://doi.org/10.3390/nano8090644
24
Ligneris E, des L F, Dumée R, Al-Attabi et al.. Mixed matrix poly (vinyl alcohol)–copper nanofibrous anti-microbial air-microfilters.Membranes, 2019, 9(7): 87 https://doi.org/10.3390/membranes9070087
25
J, Nemoto T, Saito A Isogai . Simple freeze-drying procedure for producing nanocellulose aerogel-containing, high-performance air filters.ACS Applied Materials & Interfaces, 2015, 7(35): 19809–19815 https://doi.org/10.1021/acsami.5b05841
26
S, Zhang A, Tanioka M, Okamoto et al.. High-quality nanofibrous nonwoven air filters: additive effect of water-jet nanofibrillated celluloses on their performance.ACS Applied Polymer Materials, 2020, 2(7): 2830–2838 https://doi.org/10.1021/acsapm.0c00374
27
Z, Abid A, Hakiki B, Boukoussa et al.. Preparation of highly hydrophilic PVA/SBA-15 composite materials and their adsorption behavior toward cationic dye: effect of PVA content.Journal of Materials Science, 2019, 54(10): 7679–7691 https://doi.org/10.1007/s10853-019-03415-w
28
Y, Chen J, Cao H, Wei et al.. Fabrication of AgNPs decorated on electrospun PVA/PEI nanofibers as SERS substrate for detection of enrofloxacin.Journal of Food Measurement and Characterization, 2022, 16(3): 2314–2322 https://doi.org/10.1007/s11694-022-01299-0
29
S S, Majumdar S K, Das T, Saha et al.. Adsorption behavior of copper ions on Mucor rouxii biomass through microscopic and FTIR analysis.Colloids and Surfaces B: Biointerfaces, 2008, 63(1): 138–145 https://doi.org/10.1016/j.colsurfb.2007.11.022
30
J H, Choi Y P, Hong Y C Park . Spectroscopic and ligand-field properties of [L-prolylglycinato][di(3-aminopropyl) amine] chromium(III) perchlorate.Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2002, 58(8): 1599–1606 https://doi.org/10.1016/S1386-1425(01)00611-4
31
Y, Liu Y, Huang Q, Huang et al.. Liquid-phase deposition functionalized wood sponges for oil/water separation.Journal of Materials Science, 2021, 56(34): 19075–19092 https://doi.org/10.1007/s10853-021-06440-w
32
H J, Kim S J, Park C S, Park et al.. Surface-modified polymer nanofiber membrane for high-efficiency microdust capturing.Chemical Engineering Journal, 2018, 339: 204–213 https://doi.org/10.1016/j.cej.2018.01.121
33
J, Zhang Q, Lu R, Ni et al.. Spiral grass inspired eco-friendly zein fibrous membrane for multi-efficient air purification.International Journal of Biological Macromolecules, 2023, 245: 125512 https://doi.org/10.1016/j.ijbiomac.2023.125512
