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Issue 45, 2015
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Electrospinning of ultrafine metal oxide/carbon and metal carbide/carbon nanocomposite fibers

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Abstract

Electrospinning has emerged as a facile technology for the synthesis of ultrafine fibers and even nanofibers of various materials. While carbon nanofibers have been extensively investigated, there have also been studies reported on metal oxide and metal carbide fibers. Yet, comparative studies, especially following the same general synthesis approach, are lacking. In our comprehensive study, we use a sol gel process by which a carrier polymer (cellulose acetate or polyvinylpyrrolidone) is mixed with titanium butoxide, zirconium(IV) acetylacetonate, or niobium n-butoxide to yield nanotextured titania/carbon, zirconia/carbon, or niobia/carbon nonwoven textiles. Carbothermal reduction between 1300 °C and 1700 °C effectively transforms the metal oxide/carbon fibers to metal carbide/carbon nanocomposite while preserving the fiber integrity. As a beneficial effect, the fiber diameter decreases compared to the as-spun state and we obtained ultrafine fibers: 294 ± 108 nm for ZrC/C, 122 ± 28 nm for TiC/C, and 65 ± 36 nm for NbC/C. The highly disordered and porous nature of the carbon matrix engulfing the metal carbide nanocrystals enables a high specific surface area of up to 450 m2 g−1 (TiC/C) after carbothermal reduction.

Graphical abstract: Electrospinning of ultrafine metal oxide/carbon and metal carbide/carbon nanocomposite fibers

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Publication details

The article was received on 21 Feb 2015, accepted on 27 Mar 2015 and first published on 27 Mar 2015


Article type: Paper
DOI: 10.1039/C5RA05409E
Citation: RSC Adv., 2015,5, 35683-35692
  • Open access: Creative Commons BY license
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    Electrospinning of ultrafine metal oxide/carbon and metal carbide/carbon nanocomposite fibers

    J. S. Atchison, M. Zeiger, A. Tolosa, L. M. Funke, N. Jäckel and V. Presser, RSC Adv., 2015, 5, 35683
    DOI: 10.1039/C5RA05409E

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