Fractal Structure of Nanoporous Carbon Obtained by Hydrothermal Carbonization of Plant Raw Materials

Authors V.I. Mandzyuk1 , R.P. Lisovskiy2

1Vasyl Stefanyk Precarpathian National University, 57, Shevchenko St., 76018 Ivano-Frankivsk, Ukraine

2Ivano-Frankivsk National Medical University, 2, Halytska St., 76018 Ivano-Frankivsk, Ukraine

Issue Volume 14, Year 2022, Number 5
Dates Received 06 October 2022; revised manuscript received 24 October 2022; published online 25 October 2022
Citation V.I. Mandzyuk, R.P. Lisovskiy, J. Nano- Electron. Phys. 14 No 5, 05027 (2022)
PACS Number(s) 61.43.Gt, 81.05.Rm
Keywords Porous carbon (3) , Low-temperature porometry, Specific surface, Fractal structure (3) .

The fractal structure of porous carbon materials (PCMs) obtained by hydrothermal carbonization of plant raw materials in the temperature range of 600 ÷ 1100 °С is investigated using the low-temperature porometry method. It is set that materials with a developed microporous structure and a surface fractal dimension of 2.58 are formed at carbonization temperatures of 600 ÷ 800 °C. At higher carbonization temperatures, the value of the fractal dimension of the surface decreases to 2.17, which indicates the formation of an almost smooth surface due to the intensive removal of carbon atoms from the surface layers of the material particles, a decrease in the number of micropores with their transition to mesopores, the combination of small carbon clusters in larger and the formation of microparticles of non-porous carbon material.

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