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Electrospinning of ultrafine metal oxide/carbon and metal carbide/carbon nanocomposite fibers

  • 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 m 2 g -1 (TiC/C) after carbothermal reduction.

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Document Type:Article
Author:Jennifer S. Atchison, Marco ZeigerORCiD, Aura TolosaORCiD, Lena M. Funke, Nicolas JäckelORCiD, Volker PresserORCiD
Parent Title (English):RSC Advances
First Page:35683
Last Page:35692
Year of first Publication:2015
Release Date:2022/11/18
Impact:03.289 (2015)
Scientific Units:Energy Materials
Open Access:Open Access
Signature:INM 2015/34
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International