Фізика і хімія твердого тіла (Feb 2024)

The effect of thermal modification of turbostratic carbon on its fractal structure

  • V.I. Mandzyuk,
  • R.P. Lisovskiy,
  • Yu.O. Kulyk,
  • B.I. Rachiy,
  • R.V. Solomovskyi

DOI
https://doi.org/10.15330/pcss.25.1.51-56
Journal volume & issue
Vol. 25, no. 1
pp. 51 – 56

Abstract

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Fractal structure of porous carbon materials (PCMs) obtained by thermal modification under different regimes was investigated using the method of low-temperature porometry. It was established that at modification temperatures of 300 and 600°C, materials with a developed microporous structure are formed, the surface fractal dimension of which is 2.6. At modification temperatures of 400 and 500°C, the value of the fractal dimension of the surface decreases to a value of 2.22, which indicates the formation of an almost smooth surface due to the intensive removal of carbon atoms from the near-surface layers of the material particles, a decrease in the number of micropores with their transition into mesopores, unification of small carbon clusters into larger ones and the formation of microparticles of non-porous carbon material.

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