Structure, morphology and conductive properties of thermochemically activated carbon material from walnut shells

Editorial Board PCSS Journal; Nataliia Ivanichok; Bohdan Rachiy; Volodymyr Mandzyuk; Oleh Ivanichok; Taras Lysiv

doi:10.15330/pcss.27.1.27-34

Authors

Nataliia Ivanichok G.V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine, Kyiv, Ukraine; Vasyl Stefanyk Carpathian National University, Ivano-Frankivsk, Ukraine
Bohdan Rachiy Vasyl Stefanyk Carpathian National University, Ivano-Frankivsk, Ukraine
Volodymyr Mandzyuk Vasyl Stefanyk Carpathian National University, Ivano-Frankivsk, Ukraine
Oleh Ivanichok Ivano-Frankivsk National Technical University of Oil and Gas, Department of Military Training, Ivano-Frankivsk, Ukraine
Taras Lysiv Vasyl Stefanyk Carpathian National University, Ivano-Frankivsk, Ukraine

DOI:

https://doi.org/10.15330/pcss.27.1.27-34

Keywords:

porous carbon material, thermochemical activation, specific surface area, fractal dimension, impedance spectroscopy, specific electrical conductivity

Abstract

The method of thermochemical activation with orthophosphoric acid was used to obtain porous carbon material from walnut shells. The effect of the activation temperature on the structural, morphological and conductive properties of the carbon material was studied. The structural and morphological characteristics of the carbon samples were characterized using low-temperature adsorption porometry, SEM and Raman spectroscopy. It was shown that thermochemical activation with orthophosphoric acid allows obtaining porous carbon materials with a specific surface area of 734 - 1385 m²/g, depending on the activation temperature. The conductive properties of the obtained porous carbon materials were studied using the impedance spectroscopy method.

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