Synthesis of carbon fibers arrays by the sol-gel process


This study presents a new route for the synthesis of carbon gels with a structure that includes aligned fibers of the same material. A modification of the heating process during polymerization of resorcinol and formaldehyde produces a combination of the classical polymeric nodules in carbon gels with arrays of totally aligned fibers. This new morphology, produced through a very simple process, opens up new application possibilities to the already numerous existing ones for carbon gels.


  • Combination of polymeric nodules and aligned fibers are produced by one-pot sol-gel process.

  • Formation of fiber arrays is favoured at late polymerization point under acid catalysis.

  • The fiber arrays lead to materials with very good combination of porosity and surface area.

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We are grateful to the Spanish Ministerio de Economia, Industria y Competitividad (CTQ2017-87820-R) and the Principality of Asturias–FICYT-FEDER(IDI/2018/000118) for their financial support. SFL is grateful for her research training grant received from the Administración del Principado de Asturias through the “Severo Ochoa” program.

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Correspondence to Ana Arenillas.

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Flores-López, S.L., Villanueva, S.F., Montes-Morán, M.A. et al. Synthesis of carbon fibers arrays by the sol-gel process. J Sol-Gel Sci Technol (2021).

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  • Carbon
  • Aerogel
  • Fibers
  • Microwave
  • Macroporosity