Evaluation of composite PAN fibers incorporated with carbon nanotubes and titania and their performance during the microwave-induced pre-oxidation

Tienah, H H Elagib; Hassan, Elwathig A.M.; Liu, Baihua; Han, Keqing; Yu, Miao

doi:10.1007/s42823-019-00092-2

Cited by 23 publications

(16 citation statements)

References 57 publications

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“…The crystallinity of TiO 2 was 79.50%. A similar crystallinity for the anatase phase of TiO 2 NPs is also reported in the literature [ 39 , 40 , 41 , 42 , 43 ]. Crystallinity (%) = Acrystal/Atotal × 100 …”

Section: Resultssupporting

confidence: 84%

“…The decrease in the intensity of the band at 2246 cm −1 during the synthesis of PAN_F NFs membrane indicates that –C≡N was the reaction site. The band at 1596 cm −1 in the spectrum of PAN_F NFs membrane, which increased in intensity, was assigned to the N-H in the amine group [ 39 , 40 , 41 ]. The decrease in band intensity at 2246 cm −1 and the increase in band intensity at 1596 cm −1 in the spectrum of PAN_F NFs membrane both show the conversion of the –C≡N group to an amine group.…”

Section: Resultsmentioning

confidence: 99%

“…XRD was used to study the diffraction patterns and crystallinity of PAN_P, PAN_F, PAN_Coa and PAN_ Co NFs membranes ( Figure 4 a). The XRD diffraction patterns of PAN_P, PAN_F, PAN_Co and PAN_Coa NFs membranes showed a broad amorphous halo at 2θ ≈ 30° and a crystalline peak at 2θ ≈ 17°corresponding to the (110) and (100) crystalline planes [ 41 , 42 ] The diffraction patterns of PAN_Co and PAN_Coa NFs membranes also showed the diffraction pattern for the anatase phase of TiO 2 . The diffraction pattern of TiO 2 NPs in the anatase phase is explained in Section 3.2 .…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Efficient Photocatalytic Degradation of Organic Pollutant in Wastewater by Electrospun Functionally Modified Polyacrylonitrile Nanofibers Membrane Anchoring TiO2 Nanostructured

et al. 2021

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In this study, polyacrylonitrile (PAN_P) nanofibers (NFs) were fabricated by electrospinning. The PAN_P NFs membrane was functionalized with diethylenetriamine to prepare a functionalized polyacrylonitrile (PAN_F) NFs membrane. TiO2 nanoparticles (NPs) synthesized in the laboratory were anchored to the surface of the PAN_F NFs membrane by electrospray to prepare a TiO2 NPs coated NFs membrane (PAN_Coa). A second TiO2/PAN_P composite membrane (PAN_Co) was prepared by embedding TiO2 NPs into the PAN_P NFs by electrospinning. The membranes were characterized by microscopic, spectroscopic and X-ray techniques. Scanning electron micrographs (SEM) revealed smooth morphologies for PAN_P and PAN_F NFs membranes and a dense cloud of TiO2 NPs on the surface of PAN_Coa NFs membrane. The attenuated total reflectance in the infrared (ATR-IR) proved the addition of the new amine functionality to the chemical structure of PAN. Transmission electron microscope images (TEM) revealed spherical TiO2 NPs with sizes between 18 and 32 nm. X-ray powder diffraction (XRD) patterns and energy dispersive X-ray spectroscopy (EDX) confirmed the existence of the anatase phase of TiO2. Surface profilometry da-ta showed increased surface roughness for the PAN_F and PAN_Coa NFs membranes. The adsorption-desorption isotherms and hysteresis loops for all NFs membranes followed the IV -isotherm and the H3 -hysteresis loop, corresponding to mesoporous and slit pores, respectively. The photocatalytic activities of PAN_Coa and PAN_Co NFs membranes against methyl orange dye degradation were evaluated and compared with those of bare TiO2 NPs.The higher photocatalytic activity of PAN_Coa membrane (92%, 20 ppm) compared to (PAN_Co) NFs membrane (41.64%, 20 ppm) and bare TiO2 (49.60%, 20 ppm) was attributed to the synergy between adsorption, lower band gap, high surface roughness and surface area.

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Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Efficient Photocatalytic Degradation of Organic Pollutant in Wastewater by Electrospun Functionally Modified Polyacrylonitrile Nanofibers Membrane Anchoring TiO2 Nanostructured

et al. 2021

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“…In addition to a better throughput rate, this method rules out any complex chemical and equipment prerequisite and assures impeccable fiber surface, which prompts better interfacial property. Higher interfacial property can also be achieved by functionalization of the carboxyl group in CNT [ 116 ]. Zhang et al [ 113 ] coated carboxyl-functionalized MWCNT on CF, employing both sizing and deposition methods together.…”

Section: Mechanical Performance Of Different Carbonaceous Compositementioning

confidence: 99%

A review on carbon fiber-reinforced hierarchical composites: mechanical performance, manufacturing process, structural applications and allied challenges

Sayam

Rahman

et al. 2022

Carbon Lett.

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The utilization of carbonaceous reinforcement-based polymer matrix composites in structural applications has become a hot topic in composite research. Although conventional carbon fiber-reinforced polymer composites (CFRPs) have revolutionized the composite industry by offering unparalleled features, they are often plagued with a weak interface and lack of toughness. However, the promising aspects of carbon fiber-based fiber hybrid composites and hierarchical composites can compensate for these setbacks. This review provides a meticulous landscape and recent progress of polymer matrix-based different carbonaceous (carbon fiber, carbon nanotube, graphene, and nanodiamond) fillers reinforced composites’ mechanical properties. First, the mechanical performance of neat CFRP was exhaustively analyzed, attributing parameters were listed down, and CFRPs’ mechanical performance barriers were clearly outlined. Here, short carbon fiber-reinforced thermoplastic composite was distinguished as a prospective material. Second, the strategic advantages of fiber hybrid composites over conventional CFRP were elucidated. Third, the mechanical performance of hierarchical composites based on carbon nanotube (1D), graphene (2D) and nanodiamond (0D) was expounded and evaluated against neat CFRP. Fourth, the review comprehensively discussed different fabrication methods, categorized them according to performance and suggested potential future directions. From here, the review sorted out three-dimensional printing (3DP) as the most futuristic fabrication method and thoroughly delivered its pros and cons in the context of the aforementioned carbonaceous materials. To conclude, the structural applications, current challenges and future prospects pertinent to these carbonaceous fillers reinforced composite materials were elaborated.

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“…Among all the non-magnetic metal oxides, titanium dioxide (TiO 2 ) has aroused great concern in EMWA applications because of its strong dielectric loss characteristics [80][81][82]. The low dielectric constant makes it suitable for adjusting the impedance of CNTs.…”

Section: Carbon Nanotubes/dielectric Materials Composites For Microwave Absorptionmentioning

confidence: 99%

A review on one-dimensional carbon-based composites as electromagnetic wave absorbers

Jia

Liang

Chen

et al. 2021

J Mater Sci: Mater Electron

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Electromagnetic (EM) wave technology has greatly promoted the development of information industry and facilitated human life. At the same time, EM pollution caused by excessive use of EM waves will endanger human health and disrupt the normal operation of instruments. Therefore, compelling immediate action needs to be taken to solve EM pollution and interference problem. Onedimensional carbon has become a potential candidate to solve these problems because of its high dielectric loss, significant thermodynamic stability, high specific surface area, and low density. In this paper, the application of onedimensional carbon materials and magnetic materials and dielectric materials in absorbing EM waves is introduced, and the future development direction is prospected, which provides some feasible ideas for more scientists.

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Evaluation of composite PAN fibers incorporated with carbon nanotubes and titania and their performance during the microwave-induced pre-oxidation

Cited by 23 publications

References 57 publications

Efficient Photocatalytic Degradation of Organic Pollutant in Wastewater by Electrospun Functionally Modified Polyacrylonitrile Nanofibers Membrane Anchoring TiO2 Nanostructured

Efficient Photocatalytic Degradation of Organic Pollutant in Wastewater by Electrospun Functionally Modified Polyacrylonitrile Nanofibers Membrane Anchoring TiO2 Nanostructured

A review on carbon fiber-reinforced hierarchical composites: mechanical performance, manufacturing process, structural applications and allied challenges

A review on one-dimensional carbon-based composites as electromagnetic wave absorbers

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