Morphology, Modification and Characterisation of Electrospun Polymer Nanofiber Adsorbent Material Used in Metal Ion Removal

Pereao, Omoniyi; Bode-Aluko, Chris; Laatikainen, Katri; Nechaev, Alexander; Petrik, Leslie

doi:10.1007/s10924-019-01497-w

Cited by 49 publications

(11 citation statements)

References 137 publications

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“…At these diameters, nanofibers exhibit characteristics such as high surface area to volume rate. Electrospinning can produce polymer nanofibers in a continuous mode [27][28][29][30]. Other methods such as self-assembly, chemical vapor deposition, template-assisted synthesis and wet chemical synthesis have also been used to produce nanofiber materials, however, electrospinning possess advantages such as allowing easy doping, simplicity, low cost, and high reproducibility [31].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic and antifouling properties of electrospun TiO2 polyacrylonitrile composite nanofibers under visible light

Bode-Aluko

Pereao

Kyaw

et al. 2021

Materials Science and Engineering: B

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Polyacrylonitrile and its TiO 2 composites were electrospun into nanofibers in N, N'-dimethylformamide for photocatalysis and antifouling experiments. The resultants nanofibers were characterized using field emission scanning microscope, Fourier transform infrared spectroscopy, x-ray diffraction, x-ray photoelectron spectroscopy and contact angle analyses. Fourier transform infrared spectroscopy confirmed the formation of polyacrylonitrile-TiO 2 composite nanofibers with their diameter ranging from 10 to 340 nm. The x-ray photoelectron spectroscopy results indicate the formation of O-Ti-C bonds on polyacrylonitrile-TiO 2 matrix. polyacrylonitrile-TiO 2 and polyacrylonitrile nanofiber surfaces showed superhydrophobicity with water contact angle of 155 ± 1 and 154 ± 1, respectively at 120 s. The photocatalytic properties of polyacrylonitrile nanofibers and polyacrylonitrile-TiO 2 nanofibers were investigated under a simulated visible light source of 1000 W/m 2 using methylene blue. About 90% of methylene blue was degraded within 3 h of exposure using polyacrylonitrile-TiO 2 nanofibers while 55% methylene blue degradation was achieved for polyacrylonitrile nanofibers. Photoluminescence experiment conducted on both materials showed that polyacrylonitrile-TiO 2 could produce OH radicals 10-fold compared to polyacrylonitrile nanofibers. Antimicrobial tests were conducted using E. coli and Bacillus sp. The results showed that only polyacrylonitrile-TiO 2 under visible light hindered the growth of these bacteria with a greater effect on the Gram-positive bacterium, Bacillus sp. The photo-degradation and microbial growth inhibition properties of polyacrylonitrile-TiO 2 showed that the material could be used as an antifouling material under visible light.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic and antifouling properties of electrospun TiO2 polyacrylonitrile composite nanofibers under visible light

Bode-Aluko

Pereao

Kyaw

et al. 2021

Materials Science and Engineering: B

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“…To increase the supply of clean water, the purification of water sources is important, but finding suitable materials for diverse water purification applications remains a current challenge. Electrospun nanofibers are of low cost and possess unique properties such as high porosity with fine pores, high permeability, low basis weight, and high specific surface area to volume ratio [3,4], and these properties initiated the use of electrospun nanofiber membranes as novel materials for water treatment.…”

Section: Introductionmentioning

confidence: 99%

Chitosan/PEO nanofibers electrospun on metallized track-etched membranes: fabrication and characterization

Pereao

Uche

Bublikov

et al. 2021

Materials Today Chemistry

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The development of next-generation adsorption, separation, and filtration materials is growing with an increased research focus on polymer composites. In this study, a novel blend of chitosan (CS) and polyethylene oxide (PEO) nanofiber mats was electrospun on titanium (Ti)-coated polyethylene terephthalate (PET) track-etched membranes (TMs) with after-treatment by glutaraldehyde in the vapor phase for enhancing the nanofiber stability by crosslinking. The prepared composite, titanium-coated track-etched nanofiber membrane (TTM-CPnf) was characterized by Fourier transform infra-red (FTIR), water contact angle, and scanning electron microscopy (SEM) analyses. Smooth and uniform CS nanofibers with an average fiber diameter of 156.55 nm were produced from a 70/30 CS/PEO blend solution prepared from 92 wt. % acetic acid and electrospun at 15 cm needle to collector distance with 0.5 mL/h flow rate and an applied voltage of 30 kV on the TTM-CPnf. Short (15 min) and long (72 h)-term solubility tests showed that after 3 h, crosslinked nanofibers were stable in acidic (pH ¼ 3), basic (pH ¼ 13), and neutral (pH ¼ 7) solutions. The crosslinked TTM-CPnf material was biocompatible based on the low mortality of freshwater crustaceans Daphnia magna. The composite membranes comprised of electrospun nanofiber and TMs proved to be biocompatible and may thus be suitable for diverse applications such as dual adsorptionefiltration systems in water treatment.

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“…Cross-linked nanofibers with functional groups capable of binding metal ions offer potential advantages such as ease of operation, regeneration and reuse and environmental compatibility. Crosslinking is used for improving the chemical and/or mechanical properties of nanofibers for the removal of metals from aqueous solutions [6]. Stripping and recovery of the metal ions from the ligand is crucial to nanofiber-based adsorption processes; regeneration and reuse of the nanofibers are also important to the economics of the application.…”

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confidence: 99%

“…Nanofibers with functional ligands are complex and expensive to make and, therefore, they will not be commercially viable unless they are highly durable, stable, and highly selective for extraction of metals that have commercial value. The nanofiber adsorbents may not be very useful for low value, or toxic metal recovery unless there is a specific demand for high-purity metal [6].…”

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confidence: 99%

Immobilization of Metal Selective Ligands upon Polymer Nanofibers: Successes and Challenges

Uche

Mukaba

Bode-Aluko

et al. 2020

The 16th International Symposium &Amp;ldquo;Priorities of Chemistry for a Sustainable Development” PRIOCHEM

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Morphology, Modification and Characterisation of Electrospun Polymer Nanofiber Adsorbent Material Used in Metal Ion Removal

Cited by 49 publications

References 137 publications

Photocatalytic and antifouling properties of electrospun TiO2 polyacrylonitrile composite nanofibers under visible light

Photocatalytic and antifouling properties of electrospun TiO2 polyacrylonitrile composite nanofibers under visible light

Chitosan/PEO nanofibers electrospun on metallized track-etched membranes: fabrication and characterization

Immobilization of Metal Selective Ligands upon Polymer Nanofibers: Successes and Challenges

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