Hierarchically structured TiO2/PAN nanofibrous membranes for high-efficiency air filtration and toluene degradation

Su, Jiafei; Yang, Guo‐Min; Cheng, Cuilian; Huang, Chen; He, Xu; Ke, Qinfei

doi:10.1016/j.jcis.2017.07.104

Cited by 125 publications

(87 citation statements)

References 46 publications

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“…Alternatively, tetran-butyl titanate (Ti(C 4 H 9 O) 4 ) can be used, 23,25,26 a material which is also flammable and in addition, corrosive and toxic. Only few reports can be found in the literature about coating electrospun nanofibers with TiO 2 nanoparticles; [28][29][30][31] however, immobilization of the TiO 2 particles on the nanofiber surface is not easy.…”

Section: Morphological Study Of Stabilization and Carbonization Of Pomentioning

confidence: 99%

Morphological study of stabilization and carbonization of polyacrylonitrile/TiO₂ nanofiber mats

Sabantina

Böttjer

Wehlage

et al. 2019

Journal of Engineered Fibers and Fabrics

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Polyacrylonitrile belongs to the most often used precursors for carbon fibers. Using electrospinning, polyacrylonitrile nanofiber mats can be prepared and afterwards stabilized and carbonized to prepare carbon nanofiber mats which, by adding other materials, will be useful for several applications. One of these materials is TiO2, which has photocatalytic properties and can thus be used as a photocatalyst for photodegradation of dyes. Here, we report on a detailed study of electrospinning, stabilization, and carbonization of electrospun polyacrylonitrile/TiO2 mats with varying TiO2 content. Depending on the amount of TiO2 in the nanofibers, the fiber morphology changes strongly, indicating an upper limit for the preparation of carbon/TiO2 nanofibers with smooth surface, but offering an even increased inner surface of the rougher carbon/TiO2 nanofibers with increased TiO2 content due to better maintenance of the fibrous structure during stabilization.

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Section: Morphological Study Of Stabilization and Carbonization Of Pomentioning

confidence: 99%

Morphological study of stabilization and carbonization of polyacrylonitrile/TiO₂ nanofiber mats

Sabantina

Böttjer

Wehlage

et al. 2019

Journal of Engineered Fibers and Fabrics

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“…Obviously, these peaks were not observed in pristine PAN NFs. The peaks related with nitrogen such as C―N stretching, N―H stretching, and C ≡ N peaks appeared at 1454, 1651, and 2243 cm −1 , respectively . These peaks either decreased or disappeared as the calcination temperature increased to 800°C as shown Figure B.…”

Section: Resultsmentioning

confidence: 85%

Investigation of physicochemical properties of CuSn‐based PAN nanofibers prepared via electrospinning method

Choi

Park

Kang

et al. 2019

Surface & Interface Analysis

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Copper-tin (CuSn) nanomaterials have been receiving substantial attention due to their excellent thermal, electrical, and optical properties. However, how such properties are affected based on heat treatment temperature and chemical composition of copper and tin is still not very well understood. In this paper, CuSn nanofibers were fabricated by electrospinning a precursor solution of polyacrylonitrile, copper, and tin. Calcination temperatures were selected using thermogravimetric/differential thermal analysis (TG/DTA) and Fourier transform infrared (FT-IR) results. Analytical techniques such as scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and ultraviolet photoelectron spectroscopy (UPS) were employed to investigate the physicochemical properties of the CuSn nanofibers. SEM images and EDS revealed the formation of pores on the nanofibers and high concentrations of tin were in the core, while copper was located on the surface. XRD results confirmed the monoclinic phase of Cu 6 Sn 5 for the CuSn nanofibers because peaks for diffraction angles at 27.6°, 53.4°, and 60.0°were observed. XPS results showed that Cu-C and Sn-C bonds occur at binding energies around 932 and 484 eV, respectively. The work function of the CuSn NF heat treated at 150°C was calculated from the UPS spectra, and the value was 4.19 eV.

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“…The SiO 2 nanoparticles on nanofibers provide a facile way to construct hierarchical‐structured membranes. The protuberance formed by the SiO 2 nanoparticles on the surfaces of nanofibers could not only enhance the surface roughness but also increase the effective surface area of membranes . Adding nano‐SiO 2 particles into PET‐TFA/DCM solution can produce new properties under certain conditions without destroying the bulk properties of the polymer.…”

Section: Resultsmentioning

confidence: 99%

Electrospinning polyethylene terephthalate/SiO₂ nanofiber composite needle felt for enhanced filtration performance

Guo

Liu

2019

J of Applied Polymer Sci

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In this study, polyethylene terephthalate (PET) nanofiber membrane fabricated by electrospinning was newly applied to needle-felt filters. The PET nanofiber membrane was electrospun in an optimal condition. Nanoparticles (SiO 2 ) were used to reduce the fiber diameter. Polyphenylene sulfide needle felt (PPS NF), hot melt adhesive film, and PET nanofiber membrane were compounded into sandwich-structured composite needle felt (PET/SiO 2 NNF) by heat treatment. The dynamic filtration performance of PET/SiO 2 NNF was compared with that of PPS NF and polytetrafluoroethylene-coated needle felt (PTFE CNF). The results showed that PET/SiO 2 NNF had a lower rate of increase of pressure drop and a higher dust removal rate. The completion cycle of PET/SiO 2 NNF was longer than PPS NF and PTFE CNF, which extended its service life in real applications. The successful synthesis of PET/SiO 2 NNF suggested a new method to synthesize an innovative high-performance needle-felt filter.

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Hierarchically structured TiO2/PAN nanofibrous membranes for high-efficiency air filtration and toluene degradation

Cited by 125 publications

References 46 publications

Morphological study of stabilization and carbonization of polyacrylonitrile/TiO₂ nanofiber mats

Morphological study of stabilization and carbonization of polyacrylonitrile/TiO₂ nanofiber mats

Investigation of physicochemical properties of CuSn‐based PAN nanofibers prepared via electrospinning method

Electrospinning polyethylene terephthalate/SiO₂ nanofiber composite needle felt for enhanced filtration performance

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Hierarchically structured TiO2/PAN nanofibrous membranes for high-efficiency air filtration and toluene degradation

Cited by 125 publications

References 46 publications

Morphological study of stabilization and carbonization of polyacrylonitrile/TiO2 nanofiber mats

Morphological study of stabilization and carbonization of polyacrylonitrile/TiO2 nanofiber mats

Investigation of physicochemical properties of CuSn‐based PAN nanofibers prepared via electrospinning method

Electrospinning polyethylene terephthalate/SiO2 nanofiber composite needle felt for enhanced filtration performance

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Product

Resources

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Morphological study of stabilization and carbonization of polyacrylonitrile/TiO₂ nanofiber mats

Morphological study of stabilization and carbonization of polyacrylonitrile/TiO₂ nanofiber mats

Electrospinning polyethylene terephthalate/SiO₂ nanofiber composite needle felt for enhanced filtration performance