Pore engineering towards highly efficient electrospun nanofibrous membranes for aerosol particle removal

Al-Attabi, Riyadh; Dumée, Ludovic F.; Schütz, Jürg A.; Morsi, Yos S.

doi:10.1016/j.scitotenv.2017.12.342

Cited by 69 publications

(38 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Q F value of PAN_F (0.05 Pa −1 ) was good, but this filter does not contain bactericidal nanoparticles. The Q F values of all our filter media, even after addition of TiO 2 , ZnO, and Ag nanoparticles, were comparable to those of previous studies on pristine PAN filters [62][63][64]. However, superficial velocity, particle size, and material composition might vary among studies and thus data should be compared with caution.…”

Section: Comparison Of the Filtration Performancesupporting

confidence: 85%

Composites Based on Nanoparticle and Pan Electrospun Nanofiber Membranes for Air Filtration and Bacterial Removal

et al. 2019

View full text Add to dashboard Cite

Often, solid matter is separated from particle-laden flow streams using electrospun filters due to their high specific surface area, good ability to capture aerial particulate matter, and low material costs. Moreover, electrospinning allows incorporating nanoparticles to improve the filter’s air filtration efficiency and bacterial removal. Therefore, a new, improved polyacrylonitrile (PAN) nanofibers membrane that could be used to remove air pollutants and also with antibacterial activity was developed. We engineered three different filters that are characterized by the different particles embedded in the PAN nanofibers: titanium dioxide (TiO2), zinc oxide (ZnO), and silver (Ag). Then, their filtration performance was assessed by quantifying the filtration of sodium chloride (NaCl) aerosol particles of 9 to 300 nm in diameter using a scanning mobility particle sizer. The TiO2_F filter displayed the smallest fiber diameter and the highest filtration efficiency (≈100%). Conversely, the Ag_F filter showed the highest quality factor (≈0.06 Pa−1) because of the lower air pressure drop. The resulting Ag_F nanofibers displayed a very good antibacterial activity using an Escherichia coli suspension (108 CFU/mL). Moreover, the quality factor of these membranes was higher than that of the commercially available nanofiber membrane for air filtration.

show abstract

Section: Comparison Of the Filtration Performancesupporting

confidence: 85%

Composites Based on Nanoparticle and Pan Electrospun Nanofiber Membranes for Air Filtration and Bacterial Removal

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Comparing these studies, it is possible to note that the filters reported in this study are composed of PAN material of small fibers diameter that probably explains the high-quality factor. In addition, a very high filtration efficiency (approximately 100% filtration efficiency) in the range of 9 to 300 nm aerosol particles diameters and quality factor (0.05) were reached by our PAN/Ag NPs filter in comparison to commercial filters (filtration efficiency less than 80% and quality factor of 0.02) reported elsewhere [17], [70], [71]. It should be noted that the face velocity, particle size, and material composition may be different in the aforementioned studies.…”

Section: Filtration Performance Of Nanofiber Filtersmentioning

confidence: 44%

“…For this reason, 50AgF had the highest Q F as a result of the lower pressure drop (68Pa) and also great efficiency (>98.65%) to remove nanoparticles (9-300 nm) from the air. A limited number of studies based on filtration theory have already investigated the quality factor effect of nanofibers filters [17], [71][72][73]. Comparing these studies, it is possible to note that the filters reported in this study are composed of PAN material of small fibers diameter that probably explains the high-quality factor.…”

Section: Filtration Performance Of Nanofiber Filtersmentioning

confidence: 73%

“…Other special properties, such as large specific surface area, high porosity, small pore size, and good interconnected pore structure, which is conducive to the capture of fine particles [10][11][12][13], provide electrospun polymer nanofibers applications in the filtration and textile fields [16]. Nanofiber membranes demonstrate superior filtration performances compared to the traditional filtration materials [17] by measuring the penetration of sodium chloride (NaCl) nanoparticles [18], [19].…”

Section: Introductionmentioning

confidence: 99%

“…Electrospinning is among the numerous methods currently available to produce nanofibers which continues to motivate the development of novel nanotechnology due to their extraordinary properties including small fiber diameters and the concomitant large specific surface areas, as well as the capabilities to control pore size among nanofibers and to incorporate antimicrobial agents at nanoscale [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Efficient nanoparticles removal and bactericidal action of electrospun nanofibers membranes for air filtration

Bortolassi

Nagarajan

Lima

et al. 2019

Materials Science and Engineering: C

166

View full text Add to dashboard Cite

Human exposure to air pollution and especially to nanoparticles is increasing due to the combustion of carbon-based energy vectors. Fibrous filters are among the various types of equipment potentially able to remove particles from the air. Nanofibers are highly effective in this area; however, their utilization is still a challenge due to the lack of studies taking into account both nanoparticle collection efficiency and antibacterial effect. The aim of this work is to produce and evaluate novel silver/polyacrylonitrile (Ag/PAN) electrospun fibers deposited on a nonwoven substrate to be used as air filters to remove nanoparticles from the air and also showing antibacterial activity. In order to determine the optimum manufacturing conditions, the effects of several electrospinning process parameters were analyzed such as solution concentration, collector to needle distance, flow rate, voltage, and duration. Ag/PAN nanofibers were characterized by Xray diffraction (XRD), Transmission Electron Microscopy (TEM), Fourier Transform Infra-Red spectroscopy (FTIR), Energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), and Scanning Electron Microscopy (SEM). In addition, filtration performances were determined by measuring the pressure drop and collection efficiency of sodium chloride (NaCl) aerosol particles (9 to 300 nm diameters) using Scanning Mobility Particle Sizers (SMPS). Filters with high filtration efficiency (≈100%) and high-quality factor (≈0.05 Pa -1 ) were obtained even adding different concentrations of Ag nanoparticles (AgNPs) to PAN nanofibers. The resultant Ag/PAN nanofibers showed excellent antibacterial activity against 10 4 CFU/ml E.coli bacteria.The crystallinity of the silver nanoparticles was analyzed using X-ray diffraction analysis and shown in Figure S1. The peak observed at 17° for the 0AgF samples corresponds to (110) plan of PAN. Crystalline peak corresponds to silver nanoparticles were absent in all samples (1AgF, 10AgF, and 50AgF) which is due to the small size (<5nm) of silver nanoparticles.

show abstract

Global View and Trends in Electrospun Nanofiber Membranes for Particulate Matter Filtration: A Review

Valencia-Osorio

Álvarez-Láinez

2021

Macro Materials & Eng

View full text Add to dashboard Cite

Numerous experimental works for particulate matter (PM) filtration by electrospun nanofiber membranes (ESNFMs) are published in the last 10 years (2010–2021). Organizing and comparing the large amount of the available information to identify the best trends constitutes a big challenge. This review classifies all kinds of ESNFMs considering their physical, chemical, or electrical characteristics. All of them are obtained by modifying several parameters during a specific stage associated to the electrospinning process (ES). In this review, each of these stages is considered a "moment” as a particular instant in time. According to that, three modifications are made: Moment 1—before ES, which refers to changes in polymeric solution composition; moment 2—during ES, which refers to modifying parameters while ES is performed; and moment 3—after ES, which involves applying post‐treatments directly on the membrane. After classifying all kinds of filters by moments, a detailed comparison of ESNFMs with the highest quality factors for PM0.3 is presented, finding out the best trends and comparing their main filtration parameters as well, where the most promising ones correspond to charged and nanofiber/nets membranes, due to their high capture efficiencies (>95%) while maintaining low pressure drops (<100 Pa).

show abstract

Pore engineering towards highly efficient electrospun nanofibrous membranes for aerosol particle removal

Cited by 69 publications

References 37 publications

Composites Based on Nanoparticle and Pan Electrospun Nanofiber Membranes for Air Filtration and Bacterial Removal

Composites Based on Nanoparticle and Pan Electrospun Nanofiber Membranes for Air Filtration and Bacterial Removal

Efficient nanoparticles removal and bactericidal action of electrospun nanofibers membranes for air filtration

Global View and Trends in Electrospun Nanofiber Membranes for Particulate Matter Filtration: A Review

Contact Info

Product

Resources

About