Efficient removal of high- or low-concentration copper ions using diethylenetriamine-grafted electrospun polyacrylonitrile fibers

Zhang, Yuyin; Wang, Keyu; Duan, Gaigai; Chen, Yiming; Liu, Kunming; Hou, Haoqing

doi:10.1039/d2nj05789a

Cited by 11 publications

(3 citation statements)

References 64 publications

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“…22,23 However, most CNFs are mainly derived from polyacrylonitrile (PAN) as a precursor due to a high carbon yield, good mechanical properties, and good electrospinnability. 24 Therefore, the high cost (450% of the manufacturing cost of carbon fibers) of PANbased precursors has limited their utilization in various types of markets. [25][26][27] Hence, it is important for research communities to develop high-quality CNFs through a cost-effective approach.…”

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile-grafted lignin copolymer derived carbon nanofibers as a flexible electrode for high-performance capacitive-energy storage

Kim

Radhakrishnan

et al. 2023

Mater. Adv.

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Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile-grafted lignin copolymer derived carbon nanofibers as a flexible electrode for high-performance capacitive-energy storage

Kim

Radhakrishnan

et al. 2023

Mater. Adv.

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“…To further improve the performance of this kind of sensor, the material of the insulating dielectric layer becomes a primary consideration. Among many polymer materials, polyacrylonitrile (PAN) nanofibers are widely used in filtration separation materials, sensors and other fields due to the advantages of mild spinning conditions, excellent mechanical properties and easy to achieve high porosity [29][30][31][32][33][34]. Therefore, micro/nanofiber composite yarns with SCN as the core yarn and PAN as the coating layer were prepared using the home-made four-needle water bath electrospinning device.…”

Section: Introductionmentioning

confidence: 99%

Electric field simulation of multi-needle water bath electrospinning and the structural properties of SCN/PAN micro/nanofiber composite yarns

Fan,

Yue,

Wang

et al. 2023

Nanotechnology

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Multi-needle water bath electrospinning is one of the most efficient methods to prepare micro-nano fiber composite yarns. The nanofiber structure can be targeted regulated to obtain high performance composite yarns. In order to explore the effect of receiving distance on the structure and properties of micro-nano fiber composite yarns, polyacrylonitrile nanofibers were uniformly coated on silver-coated nylon yarn by four-needle continuous water bath electrospinning method. The electric field distribution at different receiving distances was simulated by ANSYS finite element analysis software, and the effect of electric field distribution on the structure and properties of micro-nano fiber composite yarns were studied. The results indicated that the peak electric field intensity appeared at the tip of the needles and decreased with the increase of receiving distance. The receiving distance was constant, the field intensity was lower when the direction of the centerline of the needle tip was farther away from the tip, but the field intensity at the conductive core yarn was higher than that in the surrounding area (small spikes). The average field intensity of small spikes at 180 mm was only 1/4 of that at 80 mm. When the receiving distance increased within a certain range (100~140 mm), the nanofibers had smooth surface and good separation, nanofibers diameter decreased continuously, and the porosity changed inversely. With the further increase of the receiving distance, the nanofibers gradually bonded, the nanofibers diameter increased, and the porosity changed oppositely. The coating rate of nanofibers showed a decreasing trend, and the mechanical properties of micro-nano composite yarns were improved. When the receiving distance was 100 mm, the porosity reached 38.94%, the breaking force, breaking elongation and breaking strength were 13.71±1.36 cN, 22.76±6.62% and 0.15±0.02 cN·dtex-1, respectively. Considering all factors, the receiving distance of 100 mm is appropriate.

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“…Many industries, such as automotive, metal finishing, electroplating, mining, electric cable manufacturing, tannery, steel, textile, and petroleum refining and rubber processing industries, discharge into ecosystems and water bodies different concentrations of organic and inorganic pollutants such as dyes [1], pesticides [2], and fluorides [3,4] and heavy metals like copper, lead, mercury, cadmium, zinc, uranium [5], tungsten [6], cobalt, and nickel [7]. Cu and Ni ions are the most common heavy metals in the above wastewaters [8,9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Effective Composite Biosorbents Based on Wood Sawdust and Natural Clay for Heavy Metals Removal from Water

Del Sole,

Fogel,

Somin

et al. 2023

Materials

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Bentonitic clay and wood sawdust are natural materials widely available in nature at low cost with high heavy metals sorption properties that, in this work, were combined to achieve an effective composite biosorbent with high sorption properties and enhanced mechanical stability. Pine, aspen, and birch wood sawdust, as well as different bentonite clays and different sawdust modification methods (H3PO4 or HCl) were used for preparing new composite biosorbents. A mixture of wood sawdust and bentonite in a ratio of 2:1 was used. All materials were characterized by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscope (SEM) methods and tested for Cu and Ni ions removal from water. The adsorption process for all composite biosorbents was well described from a pseudo-second order kinetic model (R2 > 0.9999) with a very high initial adsorption rate of Cu and Ni ions and a maximum uptake recorded within 2 h. The results have shown that the adsorption capacity depends mainly on the kind of wood and the acid treatment of the wood that enhances the adsorption capacity. At a concentration of 50 mg/L, the biosorbent prepared using birch wood sawdust showed the worst performance, removing barely 30% of Cu and Ni ions, while aspen wood sawdust improved the adsorption of Cu (88.6%) and Ni (52.4%) ions. Finally, composite biosorbent with pine wood sawdust showed the best adsorption be haviour with an efficiency removal of 98.2 and 96.3% of Cu and Ni ions, respectively, making it a good candidate as an inexpensive and effective biosorbent for the removal of heavy metals.

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Efficient removal of high- or low-concentration copper ions using diethylenetriamine-grafted electrospun polyacrylonitrile fibers

Abstract: The heavy metal copper is a serious hazard to human health and environment. It is our challenge to develop a highly efficient adsorbent that is easy to prepare, low cost,...

Cited by 11 publications

References 64 publications

Polyacrylonitrile-grafted lignin copolymer derived carbon nanofibers as a flexible electrode for high-performance capacitive-energy storage

Polyacrylonitrile-grafted lignin copolymer derived carbon nanofibers as a flexible electrode for high-performance capacitive-energy storage

Electric field simulation of multi-needle water bath electrospinning and the structural properties of SCN/PAN micro/nanofiber composite yarns

Evaluation of Effective Composite Biosorbents Based on Wood Sawdust and Natural Clay for Heavy Metals Removal from Water

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