Highly efficient transparent air filter prepared by collecting-electrode-free bipolar electrospinning apparatus

Wang, Xiaoxiong; Xiang, Hongfei; Song, Chao; Zhu, Dongyang; Sui, Jin-Xia; Liu, Qi; Long, Yun-Ze

doi:10.1016/j.jhazmat.2019.121535

Cited by 54 publications

(24 citation statements)

References 44 publications

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“…More recently, a modified bipolar electrospinning technique without a collecting electrode, in which two jets of opposite polarity are used to neutralize each other on an insulating mesh, was applied to produce fibrous air filters. [63] As shown in Table 1, several inorganic nanoparticles (NPs) such as TiO 2 , SiO 2 , Al 2 O 3 , BaTiO 3 , and Fe 3 O 4 were recently incorporated into the nanofibers during the electrospinning process to (i) reduce the fiber diameter and pore size, (ii) increase the porosity, surface roughness, and fiber strength, (iii) construct hierarchical structures, and (iv) release negative ions. [37,[64][65][66][67][68][69] For instance, PVA-PAA-SiO 2 -Ag composite fiber filters were produced by one-step electrospinning of a suspension containing poly(vinyl alcohol) (PVA), poly(acrylic acid) (PAA), SiO 2 NPs, and AgNO 3 , whereas the latter two were used to decrease the fiber diameter and generate antibacterial silver NPs, respectively, as shown in Figure 4f.…”

Section: Electrospinningmentioning

confidence: 99%

“…Homogeneous fiber distributions could be achieved by some particular techniques, such as bipolar electrospinning, where the collector is placed in between the needles. [63] Coating of nonwoven fiber structures with 2D or 3D materials, such as GO or nanoporous carbon foams, was also used to decrease interfiber voids. [173] Although for fibrous air filters, a very narrow distribution of fiber diameter results in more compact and efficient fabrics, it also increases the airflow resistance.…”

Section: Structural Optimizationmentioning

confidence: 99%

See 1 more Smart Citation

Review on Polymeric, Inorganic, and Composite Materials for Air Filters: From Processing to Properties

Henning

Abdullayev

Vakifahmetoğlu

et al. 2021

Adv Energy and Sustain Res

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Particulate and gaseous air pollutants pose a threat to human health and contribute to climate change. By today, air filters, stationary and portable, are markedly improved and can often provide innocuous air pollution levels. After introducing the classification and standards on air filters, the influence of the processing route and its parameters on the resulting air filter properties and consequently its performance are discussed. Numerous tools are presented to adjust structural properties such as fiber or pore diameter, specific surface area, surface charge, hydrophilicity, or photocatalytic activity to achieve the desired performance in terms of high filtration efficiencies, sufficient mechanical stability, regeneration eligibility, antimicrobial and optical properties. In particular, inorganic and composite materials as well as nonfibrous structures are covered, which are currently holding an outsider position in an air filter community dominated by polymeric materials and fibrous structures.

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Section: Electrospinningmentioning

confidence: 99%

Section: Structural Optimizationmentioning

confidence: 99%

Review on Polymeric, Inorganic, and Composite Materials for Air Filters: From Processing to Properties

Henning

Abdullayev

Vakifahmetoğlu

et al. 2021

Adv Energy and Sustain Res

View full text Add to dashboard Cite

show abstract

“…Furthermore, it is possible to selectively produce and control the pore size between the nanofibers according to the application definition. In addition, by introducing the antimicrobial agents and particles and changing the morphology of the nanofiber mats into the nanoscale, well-cross-linked pore structure, all the conditions required for trapping fine particles can be met [ 28 , 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Electrospun Nanofiber Mats for Filtering Applications—Technology, Structure and Materials

2021

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Air pollution is one of the biggest health and environmental problems in the world and a huge threat to human health on a global scale. Due to the great impact of respiratory viral infections, chronic obstructive pulmonary disease, lung cancer, asthma, bronchitis, emphysema, lung disease, and heart disease, respiratory allergies are increasing significantly every year. Because of the special properties of electrospun nanofiber mats, e.g., large surface-to-volume ratio and low basis weight, uniform size, and nanoporous structure, nanofiber mats are the preferred choice for use in large-scale air filtration applications. In this review, we summarize the significant studies on electrospun nanofiber mats for filtration applications, present the electrospinning technology, show the structure and mechanism of air filtration. In addition, an overview of current air filtration materials derived from bio- and synthetic polymers and blends is provided. Apart from this, the use of biopolymers in filtration applications is still relatively new and this field is still under-researched. The application areas of air filtration materials are discussed here and future prospects are summarized in conclusion. In order to develop new effective filtration materials, it is necessary to understand the interaction between technology, materials, and filtration mechanisms, and this study was intended to contribute to this effort.

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“…Air filtration has become the focus of global environmental protection [1][2][3][4]. The existence of fine particulate matter (PM) has posed a great threat to public health [5,6]. It is required urgently to realize the highly efficient filtration of ultrafine particles.…”

Section: Introductionmentioning

confidence: 99%

Self-Powered Electrospun Composite Nanofiber Membrane for Highly Efficient Air Filtration

et al. 2020

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Highly efficient air filtration with low pressure drop is the key to air purification. In this work, a self-powered electrospun nanofiber membrane with an electrostatic adsorption effect was prepared to improve the filtration efficiency of micro/nano particles. The composite membrane was comprised of polyvinyl chloride (PVC) nanofibers and polyamide-6 (PA6) nanofibers. The triboelectric effect between the two adjacent nanofiber membranes generated electrostatic charges under the action of air vibration, by which the electrostatic adsorption with the same pressure drop was enhanced. The electrostatic voltage on the self-powered nanofiber membrane was 257.1 mV when the flow velocity was 0.1 m/s. For sodium chloride (NaCl) aerosol particles with a diameter of 0.3 μm, the removal efficiency of the self-powered composite nanofiber membrane was 98.75% and the pressure drop was 67.5 Pa, which showed a higher quality factor than the membrane without electrostatic charges. This work provides an effective way to improve the filtration performance of air filter membranes.

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Highly efficient transparent air filter prepared by collecting-electrode-free bipolar electrospinning apparatus

Cited by 54 publications

References 44 publications

Review on Polymeric, Inorganic, and Composite Materials for Air Filters: From Processing to Properties

Review on Polymeric, Inorganic, and Composite Materials for Air Filters: From Processing to Properties

Electrospun Nanofiber Mats for Filtering Applications—Technology, Structure and Materials

Self-Powered Electrospun Composite Nanofiber Membrane for Highly Efficient Air Filtration

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