Fabrication and performance of a stable micro/nano composite electret filter for effective PM2.5 capture

Cai, Rong-Rong; Li, Shu-Zheng; Zhang, Lizhi; Yang, Lei

doi:10.1016/j.scitotenv.2020.138297

Cited by 66 publications

(35 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[35,183,184] In order to ensure high filtration efficiency while preventing airflow resistance, Cai et al elaborated 3D fluffy PS microfibrous membranes. [184] By adjusting the RH during electrospinning, they were able to tune the fiber diameter, the packing density of the fibers as well as the amount of embedded charges. Thus, an optimal RH of 60% was found resulting to both high filtration efficiency and low pressure drop (Figure 14a).…”

Section: Nanofibrous Mats For Air Filtrationmentioning

confidence: 99%

“…[183] Fibrous membranes elaborated via electrospinning have been identified as excellent candidates for this purpose thanks to their high surface area-to-volume ratio as well as possible in situ charging. [35,183,184] In order to ensure high filtration efficiency while preventing airflow resistance, Cai et al elaborated 3D fluffy PS microfibrous membranes. [184] By adjusting the RH during electrospinning, they were able to tune the fiber diameter, the packing density of the fibers as well as the amount of embedded charges.…”

Section: Nanofibrous Mats For Air Filtrationmentioning

confidence: 99%

Section: Nanofibrous Mats For Air Filtrationmentioning

confidence: 99%

“…Figure 14. a) Filtration efficiency for 0.3 µm particles (PM 0.3 ), pressure drop measured at 5.3 cm s −1 and quality factor of PS filters. Reproduced with permission [184]. Copyright 2020, Elsevier.…”

mentioning

confidence: 99%

See 3 more Smart Citations

A Review on the Impact of Humidity during Electrospinning: From the Nanofiber Structure Engineering to the Applications

Mailley

Hébraud

Schlatter

2021

Macro Materials & Eng

109

View full text Add to dashboard Cite

Electrospinning is the process of choice for the elaboration of nanofibrous mats. During the process, a thin and continuous charged jet of a polymer solution is travelling from an emitter subjected to a high voltage towards a grounded collector.Although the duration of the jet travel is in the order of few tens of milliseconds, the physical interactions acting between the jet and the air play a key role on the resulting fiber morphology. These interactions mainly rely on the amount of water molecules in air. This review deals with the effect of humidity during electrospinning on solvent evaporation, the solidification rate of nanofibers and finally, on the morphology at length scales ranging from the non-woven mat, the nanofiber itself down to the polymer crystal.Original electrospinning processes operating under specific environmental conditions as well as the specificities encountered in needleless and free-surface electrospinning dedicated to industrial scale mass production are also discussed. Then, it is shown how the control of humidity during electrospinning and the understanding of its influence on the fibrous structure can be exploited to target various applications dedicated to energy, environment and health. Finally, current challenges and ideas for future research and new developments are presented.

show abstract

Section: Nanofibrous Mats For Air Filtrationmentioning

confidence: 99%

Section: Nanofibrous Mats For Air Filtrationmentioning

confidence: 99%

Section: Nanofibrous Mats For Air Filtrationmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

A Review on the Impact of Humidity during Electrospinning: From the Nanofiber Structure Engineering to the Applications

Mailley

Hébraud

Schlatter

2021

Macro Materials & Eng

109

View full text Add to dashboard Cite

show abstract

“…The results revealed that, depending on the particle size, different electrostatic mechanisms have different impacts on filtration enhancement; for particles of ≈20 nm, polarization force; for ≈100 nm, image force; and for ≈300 nm, Coulombic force. The filtration electret media produced by Cai et al [13] was characterized by 99.96% filtration efficiency and low pressure drop (54 Pa). Li and coauthors [14] developed an electret membrane with 99.992% filtration efficiency and pressure drop of 61 Pa.…”

Section: Introductionmentioning

confidence: 99%

Model-Based Fiber Diameter Determination Approach to Fine Particulate Matter Fraction (PM2.5) Removal in HVAC Systems

Drąg¹

2021

Applied Sciences

View full text Add to dashboard Cite

Particulate Matter (PM) is a general term to classify air pollutants consisting of airborne particles. The particles vary in composition and size, and the sizes of particles range from 2.5 µm (PM2.5) to 10 µm (PM10). Anthropogenic activity (e.g., industrial processes or fuel/waste combustion) stands as the main emission source of PM. Due to the fact that indoor PM penetrates from the outside to indoor air, Heating, Ventilation, and Air-Conditioning (HVAC) filtration systems may play a significant role in decreasing air pollution indoors. The section of the respiratory tract affected by particulate matter depends on the particle size. The smaller the fraction, the more deeply it can enter into lungs and bronchi, causing a series of health problems. Conventional electret air filters applied in HVAC systems are not able to efficiently remove PM2.5 (e.g., huge gaps between thick fibers and unintentional elimination of electrostatic effects). The electrospinning process allows for the production of fibers of diverse diameters, including ultrathin yarns. The following work presents the axial length scale χχ estimation method for the given conditions and experimental results. According to this approach, it is possible to find out what parameters should be used to produce materials at certain fiber diameters and to capture fine particulate matter fractions (PM2.5). This research refers to poly(acrylonitrile) (PAN) fibers. The most important advantages, limitations, and challenges of the presented methodology are detected and discussed in this work.

show abstract

Nanomaterials in Filtration

Abd‐Elhamid

Nayl

2022

Nanotechnology for Environmental Remediation

View full text Add to dashboard Cite

Fabrication and performance of a stable micro/nano composite electret filter for effective PM2.5 capture

Cited by 66 publications

References 38 publications

A Review on the Impact of Humidity during Electrospinning: From the Nanofiber Structure Engineering to the Applications

A Review on the Impact of Humidity during Electrospinning: From the Nanofiber Structure Engineering to the Applications

Model-Based Fiber Diameter Determination Approach to Fine Particulate Matter Fraction (PM2.5) Removal in HVAC Systems

Nanomaterials in Filtration

Contact Info

Product

Resources

About