Synthesis of Polyvinyl Alcohol/Coal Fly Ash Hybrid Nano-Fiber Membranes for Adsorption of Heavy Metals in Diesel Fuel

Ge, Jun Cong; Wu, Guirong; Xu, Guangxian; Song, Jun; Choi, Nag Jung

doi:10.3390/nano13101674

Cited by 5 publications

(3 citation statements)

References 49 publications

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“…28,29 Modifying the dopant type and concentration can achieve various levels of conductivity, transforming insulating PVA into valuable semiconducting material for optoelectronic applications. [30][31][32] A novel and promising approach to achieving semiconducting properties in PVA involves the use of a dopant like Ternary Deep Eutectic Solvent (TDES) functionalized activated charcoal (TAC). Deep eutectic solvents are a class of ionic liquids that are formed by the mixture of a hydrogen bond acceptor and a hydrogen bond donor in a specific ratio to a liquid with a lower melting point compared to their starting materials.…”

Section: Introductionmentioning

confidence: 99%

Synergistic fabrication, characterization, and prospective optoelectronic applications of DES grafted activated charcoal dispersed PVA films

Lokesh Kumar,

Binish,

Rajprasad

et al. 2024

Polymers for Advanced Techs

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This study investigates the synthesis, analysis, and utility of films comprising deep eutectic solvent (DES) grafted activated charcoal (AC) within a polyvinyl alcohol (PVA) matrix for optoelectronic device applications. The fabrication process involves the dispersion of DES functionalization AC into the PVA solution, followed by casting onto substrates with controlled drying. Comprehensive characterization encompassing X‐ray diffraction (XRD), scanning electron microscopy (SEM), UV–vis spectroscopy, Fourier‐transform infrared spectroscopy (FTIR), and impedance spectroscopy which discerns the films microstructure, morphology, conductance, band‐gap, and optical traits. The DES grafted AC infusion with variable concentration has significantly influenced optical absorbance and reduced the band gap indicating efficient charge mobility. Furthermore, the impedance analysis has revealed the electrical conduction of the film to be 1.8 × 10−6 Ω−1 m−1. In summary, the dispersion of DES modified AC in the PVA matrix have converted the insulating PVA to a semiconducting polymeric film with reduced band‐gap and increased absorption, which present a propitious avenue for wide array of optoelectronic devices, such as thin film transistors, photovoltaics, LEDs, photodetectors, and many such applications.

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Section: Introductionmentioning

confidence: 99%

Synergistic fabrication, characterization, and prospective optoelectronic applications of DES grafted activated charcoal dispersed PVA films

Lokesh Kumar,

Binish,

Rajprasad

et al. 2024

Polymers for Advanced Techs

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“…Therefore, it has many advantages in the directional preparation of functional materials. Especially with its porous and large specific surface area characteristics, it is more conducive to contact between the adsorbent and the adsorbed material, thereby releasing its physical and chemical properties [13].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Air Conditioning Antimicrobial Filter for Electrically Powered Port Tractors via Electrospinning Coating

Yoon,

Pahn,

Kyun

et al. 2024

Coatings

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With the stricter emission regulations for internal combustion engines, electric vehicles, including electrically powered port tractors, have received increasing attention. However, currently, most of the filters used in electric vehicles are conventional membranes that only have the function of filtering particles and foreign objects. Therefore, in order to improve the above issues, the surface of commercial non-woven filter membranes was coated with Ag nanopowder nanofibers and AgNO3 nanofibers via electrospinning. At present, the comparative research on the antibacterial ability of Ag nanopowder and AgNO3 is still blank in the same research system, especially with the use of electrospun coating technology. The morphologies and structures of non-woven fabrics and electrospinning coated samples were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The characterization results indicate that both pure PVA and PVA composite fibers can be successfully coated on the surface of non-woven fabrics. The average diameter of all electrospun PVA composite fibers is distributed in the range of 470–700 nm. The PVA nanofibers with a low content of 1 wt% AgNO3 have good antibacterial properties against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), with clearance clear zones of inhibition of 26.00 mm and 17.30 mm, respectively.

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“…[2,4,[7][8][9]. One of the most widely used electrospinning polymers is polyvinyl alcohol (PVA) because it is easy to work with and is environmentally friendly [10,11].…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to Obtaining Metal Oxide HAR Nanostructures by Electrospinning and ALD

Blagoev,

Georgieva,

Starbova

et al. 2023

Materials

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In this work, a novel approach is suggested to grow bilayer fibers by combining electrospinning and atomic layer deposition (ALD). Polyvinyl alcohol (PVA) fibers are obtained by electrospinning and subsequently covered with thin Al2O3 deposited at a low temperature by ALD. To burn the PVA core, the fibrous structures are subjected to high-temperature annealing. Differential scanning calorimetry (DSC) analysis of the PVA mat is performed to establish the proper annealing regime for burning off the PVA core and obtaining hollow fibers. The hollow fibers thus formed are covered with a ZnO layer deposited by ALD at a higher temperature within the ALD window of ZnO. This procedure allows us to prepare ZnO films with better crystallinity and stoichiometry. Different characterization methods—SEM, ellipsometry, XRD, and XPS—are performed at each step to investigate the processes in detail.

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Synthesis of Polyvinyl Alcohol/Coal Fly Ash Hybrid Nano-Fiber Membranes for Adsorption of Heavy Metals in Diesel Fuel

Cited by 5 publications

References 49 publications

Synergistic fabrication, characterization, and prospective optoelectronic applications of DES grafted activated charcoal dispersed PVA films

Synergistic fabrication, characterization, and prospective optoelectronic applications of DES grafted activated charcoal dispersed PVA films

Fabrication of Air Conditioning Antimicrobial Filter for Electrically Powered Port Tractors via Electrospinning Coating

A Novel Approach to Obtaining Metal Oxide HAR Nanostructures by Electrospinning and ALD

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