Multilevel structured PASS nanofiber filter with outstanding thermal stability and excellent mechanical property for high-efficiency particulate matter removal

Su, Qing; Wei, Zhimei; Zhu, Chuanren; Wang, Xiaojun; Zeng, Wei; Wang, Shaoyu; Long, Shengru; Yang, Jie

doi:10.1016/j.jhazmat.2022.128514

Cited by 24 publications

(11 citation statements)

References 57 publications

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“…The PASS fiber with bead structure had the highest dust holding capacity (24.7 ± 0.6 g/m 2 ) compared with other straight PASS fibers (17.1 ± 0.2 and 18.1 ± 0.4 g/m 2 ) because the existence of bead like structure enlarged the cavity structure in the fibrous membrane and the space between fibers; the dust holding capacity was related to the porosity of the fibrous membrane: the higher the porosity, the better the dust holding capacity, as shown in Fig. 12 (f) [163] . The preparation of high dust holding capacity fibers by simplified steps is the goal to be explored in the future.…”

Section: Design Of Multifunctional Electrospun Air Filtermentioning

confidence: 92%

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High-performance multifunctional electrospun fibrous air filter for personal protection: A review

Shao

Chen²,

Wang³

et al. 2022

Separation and Purification Technology

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Section: Design Of Multifunctional Electrospun Air Filtermentioning

confidence: 92%

“…(e) Fabrication process of M−PASS nanofibrous membrane. (f) Porosity and dust holding capacity of different nanofibrous membranes [163] . …”

Section: Design Of Multifunctional Electrospun Air Filtermentioning

confidence: 99%

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

Shao

Chen²,

Wang³

et al. 2022

Separation and Purification Technology

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“…Meanwhile, the FTIR analysis was also conducted to elucidate the chemical compositions of OPPS-20 fibers (Figure 6d). The peak at around 1067 cm −1 is assigned to the stretching vibration peak of −SO− groups, 26 and the two peaks at around 1152 and 1322 cm −1 are assigned to the symmetric stretching vibration and asymmetric stretching vibration peaks of −SO 2 − groups, 27 respectively. In addition, the two peaks at around 1045 and 1287 cm −1 are attributed to the symmetric stretching vibration and asymmetric stretching vibration peaks of C−O−C groups form aromatic ether.…”

Section: Structural Characterization and Performancementioning

confidence: 99%

OPPS Fibers with High Temperature Resistance and Excellent Antioxidant Properties by an Oxidation Method

Yang

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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Polyphenylene sulfide (PPS) fiber products have been widely used for separation and filtration in harsh environments due to their excellent chemical resistance and relatively economical price. However, the poor temperature and weak oxidation resistance of PPS significantly shorten its service life under high temperature and strong oxidation environments. Herein, we report a type of oxidation-modified PPS (OPPS) fibers with excellent high temperature and oxidation resistance. This is achieved by oxidizing the thioether sulfide groups in PPS molecular chains into sulfoxide and sulfone groups and cross-linking the intermolecular chains. Both experiments and density functional theory (DFT) calculations indicate that hypochlorous acid (HClO) molecules can rapidly oxidize the PPS fiber surface. In addition, molecular dynamics (MD) simulations prove that there are strong hydrogen bonds and van der Waals interactions between HClO molecules and OPPS molecular chains, which promote the penetration of HClO molecules into the interior of the fiber to complete the layer-by-layer oxidation. The prepared OPPS-20 fibers exhibit excellent structural stability under high temperature and strong oxidant environments. Impressively, the OPPS-20 nonwoven filter still exhibits a high dust filtration efficiency of 99.95% after aging at 320 °C for 12 h, and the corresponding pressure drop is 24 Pa. In addition, the OPPS-20 nonwoven filter also maintains excellent filtration performance after aging in 60% HNO3 solution for 12 h, and the filtration efficiency and pressure drop are 99.96% and 29 Pa, respectively. This work demonstrates that the novel OPPS fibers have excellent application prospects in the field of separation and filtration in harsh environments.

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“…11,12 The electrospun NFMs are characterized by small volume, large surface area, diverse structure, and high porosity, conferring high efficiency of PM removal. 13 More-over, the combination of electrospinning and electrospray strategies facilitates the fabrication of nanocomposite structures, where specific nanostructures are anchored between the surface and the nanofiber network by electrospray, resulting in enhanced fiber functionality. 14 As a good example, Hwang and co-workers 15 reported a silver nanowire (AgNW)-coated fibrous air filter medium by electrospinning and electrospraying, in which the AgNWs (diameter of 115 nm, length of 4−50 μm) were electrosprayed onto the surfaces of electrospun polyacrylonitrile fibers, conferring the increase of overall filtration efficiency from 92.0−96.5 to 98.3−99.6% (airflow velocity of 2.5 cm/s).…”

Section: ■ Introductionmentioning

confidence: 99%

Nanopatterned Electroactive Polylactic Acid Nanofibrous MOFilters for Efficient PM_0.3 Filtration and Bacterial Inhibition

Zhu,

Li,

et al. 2023

ACS Appl. Mater. Interfaces

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Biodegradable polylactic acid (PLA) nanofibrous membranes (NFMs) hold great potential to address the increasing airborne particulate matter (PM) and dramatic accumulation of plastic/microplastic pollution. However, the field of PLA NFM-based filters is still in its infancy, frequently dwarfed by the bottlenecks regarding relatively low surface activity, poor electroactivity, and insufficient PM capturing mechanisms. This effort discloses a microwave-assisted approach to minute-level synthesis of dielectric ZIF-8 nanocrystals with high specific surface area (over 1012 m2/g) and ultrasmall size (∼240 nm), which were intimately anchored onto PLA nanofibers (PLA@ZIF-8) by a combined “electrospinning–electrospray” strategy. This endowed the PLA@ZIF-8 NFMs with largely increased electroactivity in terms of elevated dielectric coefficient (an increase of 202%), surface potential (up to 5.8 kV), and triboelectric properties (output voltage of 30.8 V at 10 N, 0.5 Hz). Given the profound control over morphology and electroactivity, the PLA@ZIF-8 NFMs exhibited efficient filtration of PM0.3 (97.1%, 85 L/min) with a decreased air resistance (592.5 Pa), surpassing that of the pure PLA counterpart (88.4%, 650.9 Pa). This was essentially ascribed to realization of multiple filtration mechanisms for PLA@ZIF-8 NFMs, including enhanced physical interception, polar interactions, and electrostatic adsorption, and the unique self-charging function triggered by airflow vibrations. Moreover, perfect antibacterial performance was achieved for PLA@ZIF-8, showing ultrahigh inhibition rates of 99.9 and 100% against E. coli and S. aureus, respectively. The proposed hierarchical structuring strategy, offering the multifunction integration unattainable with conventional methods, may facilitate the development of biodegradable long-term air filters.

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Multilevel structured PASS nanofiber filter with outstanding thermal stability and excellent mechanical property for high-efficiency particulate matter removal

Cited by 24 publications

References 57 publications

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

OPPS Fibers with High Temperature Resistance and Excellent Antioxidant Properties by an Oxidation Method

Nanopatterned Electroactive Polylactic Acid Nanofibrous MOFilters for Efficient PM_0.3 Filtration and Bacterial Inhibition

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Multilevel structured PASS nanofiber filter with outstanding thermal stability and excellent mechanical property for high-efficiency particulate matter removal

Cited by 24 publications

References 57 publications

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

OPPS Fibers with High Temperature Resistance and Excellent Antioxidant Properties by an Oxidation Method

Nanopatterned Electroactive Polylactic Acid Nanofibrous MOFilters for Efficient PM0.3 Filtration and Bacterial Inhibition

Contact Info

Product

Resources

About

Nanopatterned Electroactive Polylactic Acid Nanofibrous MOFilters for Efficient PM_0.3 Filtration and Bacterial Inhibition