Investigation of the Nanoporous Structure of Thermally Modified Carbon Materials by Small-Angle X-ray Scattering

Editorial Board PCSS Journal; S.A. Lisovska; N.Ya. Ivanichok; B. I. Rachiy; O.V. Shutak; N.R. Ilnytskyi; O.I. Bulbuk; R.P. Lisovskiy

doi:10.15330/pcss.26.4.946-952

Authors

S.A. Lisovska Vasyl Stefanyk Carpathian National University, Ivano-Frankivsk, Ukraine; Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine
N.Ya. Ivanichok G.V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine, Kyiv, Ukraine; Joint Educational and Scientific Laboratory of Gamma Resonance Spectroscopy G.V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine and Vasyl Stefanyk Carpathian National University, Ivano-Frankivsk, Ukraine
B. I. Rachiy Vasyl Stefanyk Carpathian National University, Ivano-Frankivsk, Ukraine
O.V. Shutak Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine
N.R. Ilnytskyi Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine
O.I. Bulbuk Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine
R.P. Lisovskiy Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine; Joint Educational and Scientific Laboratory of Gamma Resonance Spectroscopy G.V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine and Vasyl Stefanyk Carpathian National University, Ivano-Frankivsk, Ukraine

DOI:

https://doi.org/10.15330/pcss.26.4.946-952

Keywords:

nanoporous carbon materials, small-angle X-ray scattering, thermal modification, radius of gyration, Guinier method, Porod method, fractal morphology, mesopores, sorption properties, electrochemical capacitors

Abstract

The nanoporous structure of thermally modified carbon materials was studied using the small-angle X-ray scattering (SAXS) method. An analysis of scattering curves in Guinier and Porod coordinates was carried out for the initial and thermally activated materials at 400 °C for 30-240 minutes. It was established that thermal treatment for 150-180 minutes promotes the formation of a mesoporous structure with a radius of gyration ranging from 2.69 to 3.53 nm. The application of the Porod method made it possible to assess the fractal morphology of the surface, which varies from smooth to fractal. The obtained results indicate the possibility of controlled regulation of the porosity of carbon materials for sorption and electrochemical applications.

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