Excellent microwave absorption of lightweight PAN-based carbon nanofibers prepared by electrospinning

Dong, Shixiang; Li, Jing; Zhang, Shuai; Li, Ning; Li, Bo; Zhang, Qianli; Ge, Liqin

doi:10.1016/j.colsurfa.2022.129670

Cited by 15 publications

(2 citation statements)

References 40 publications

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“…Analysis of Fig. 2 A reveals that the broad peaks appearing at 2θ = 16.9° are indicative of the amorphous structural nature of PAN 25 . The presence of characteristic diffraction peaks of both ZIF-94 and PAN at various contents of ZIF-94-PAN provides preliminary evidence for the successful preparation of the materials 26 .…”

Section: Resultsmentioning

confidence: 99%

Facile construction of ZIF-94/PAN nanofiber by electrospinning for the removal of Co(II) from wastewater

Yin,

Peng,

et al. 2024

Sci Rep

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This study aimed to synthesize a novel nanofiber adsorbent based on metal–organic frameworks (MOFs), ZIF-94-PAN, by incorporating ZIF-94 into polyacrylonitrile (PAN) through electrospinning. The investigation of the adsorption characteristics of ZIF-94-PAN for cobalt ions was undertaken, yielding findings that suggest an optimum ZIF-94 loading content within the ZIF-94-PAN composite of 8%. The adsorption experiments revealed that, under pH 8.3 and 298 K, ZIF-94-PAN-8% attained cobalt ion equilibrium adsorption (139.08 mg/g). Additionally, the adsorption kinetics of cobalt ions exhibited conformity with the pseudo-second-order model, whereas adherence to the Freundlich isotherm model indicated a non-homogeneous, endothermic process. XPS analysis unveiled that the adsorption mechanism was characterized by the coordination of nitrogen and oxygen atoms within ZIF-94-PAN with cobalt ions. This study effectively addressed the challenges of separating and recovering MOFs adsorbents by fabricating them as nanofibers. The remarkable adsorption performance and stability of the ZIF-94-PAN nanofibers highlight their potential for removing cobalt-contaminated wastewater.

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Section: Resultsmentioning

confidence: 99%

Facile construction of ZIF-94/PAN nanofiber by electrospinning for the removal of Co(II) from wastewater

Yin,

Peng,

et al. 2024

Sci Rep

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“…(a–c) Cole–Cole curves of MC–CNFs; (d) C 0 ; (e) dependence of the matching thickness on the matching frequency at the quarter wavelength of MC–CNFs-1:1–900; (f) SRL l ; (g) SRL lt ; ,,− and microwave-absorbing properties under (h) immersion in different solutions and (i) thermal process.…”

Section: Results and Discussionmentioning

confidence: 99%

Biologically Inspired Nanoporous PAN/PMMA/β-CD Carbon Fibers for Efficient Microwave Absorption

Deng,

Yang,

Liu

et al. 2024

ACS Appl. Nano Mater.

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One-dimensional carbon nanofibers (CNFs) have great potential as lightweight wave absorbers due to their excellent plasticity and stability. However, a high electrical conductivity tends to generate massive reflected waves on the surface of these absorbers. Therefore, the microwave absorption properties need to be modulated by rational microstructural design and heterogeneous interface construction. In this paper, lotus-rootlike multichannel CNFs (polyacrylonitrile/poly(methyl methacrylate)/β-cyclodextrin (PAN/PMMA/β-CD)) were prepared by sacrificial templateassisted electrospinning, followed by a traditional stabilization and carbonization process. The introduction of a multichannel structure together with the overlapping conductive network formed in CNFs not only greatly improves the dielectric loss ability of the material but also provides more pathways for electron transfer. Effective tuning of the channel structure and conductivity of the material can be easily achieved by adjusting the sacrificial agent content and the carbonization temperature. The sample (MC− CNFs-1:1−900) shows good impedance matching characteristics and microwave attenuation when the content of the sacrificial agent in the precursor filament is 50 wt % with the carbonization temperature set at 900 °C. Hence, a minimum reflection loss (RL min ) of −45.19 dB at 2.8 mm and an effective absorption bandwidth (EAB) of 3.825 GHz were achieved for CNFs by a simple method of preparation, providing a solid foundation for the development of high-performance lightweight microwave-absorbing materials (MAMs).

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Carbon nanofibers embedded with Fe–Co alloy nanoparticles via electrospinning as lightweight high-performance electromagnetic wave absorbers

Cai,

Jiang,

Zhang

et al. 2024

Rare Met.

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Excellent microwave absorption of lightweight PAN-based carbon nanofibers prepared by electrospinning

Cited by 15 publications

References 40 publications

Facile construction of ZIF-94/PAN nanofiber by electrospinning for the removal of Co(II) from wastewater

Facile construction of ZIF-94/PAN nanofiber by electrospinning for the removal of Co(II) from wastewater

Biologically Inspired Nanoporous PAN/PMMA/β-CD Carbon Fibers for Efficient Microwave Absorption

Carbon nanofibers embedded with Fe–Co alloy nanoparticles via electrospinning as lightweight high-performance electromagnetic wave absorbers

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