XRD Characterization of Activated Carbons Synthesized from Tyre Pyrolysis Char via KOH Activation

Nusrat H Zerin; Mohammad G Rasul; Md Islam Jahirul; A.S.M. Sayem; Zakaria Quadir; Rezwanul Haque

doi:10.3390/technologies13120565

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XRD Characterization of Activated Carbons Synthesized from Tyre Pyrolysis Char via KOH Activation

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XRD Characterization of Activated Carbons Synthesized from Tyre Pyrolysis Char via KOH Activation

Nusrat H Zerin, Mohammad G Rasul, Md Islam Jahirul, A.S.M. Sayem, Zakaria Quadir and Rezwanul Haque

Technologies, Vol.13(12), pp.1-12

2025

DOI: https://doi.org/10.3390/technologies13120565

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Abstract

tyre-derived activated carbon (TDAC)

pyrolysis

X-ray diffraction (XRD)

crystallinity

porosity

The structural modification of tyre-derived activated carbon (TDAC) after chemical activation is not sufficiently recognised yet, especially regarding its crystallinity and porosity. This study examined the development of the crystal structure of TDAC by X-ray diffraction (XRD) analysis, concentrating on critical parameters like interplanar distance (d(002)), crystallite size (Lc), and crystalline percentage. Mixed tyres were pyrolysed at 550 • C to produce char and then chemically activated with KOH at different ratios and temperatures, thereafter undergoing structural characterisation. The results indicate that TDAC is mostly non-graphitizing, maintaining a disordered turbostratic structure even after activation. The widening of the (002) XRD peak and the lack of distinct (hkl) diffraction peaks validate its amorphous characteristics. Higher activation levels lead to an expanded surface area with decreasing crystallite size, signifying a shift towards higher disorder. This research examined the relationship among activation factors, porosity, and structural alterations, emphasising the compromise between crystallinity and surface area.

Details

Title: XRD Characterization of Activated Carbons Synthesized from Tyre Pyrolysis Char via KOH Activation
Authors: Nusrat H Zerin (Author) - Central Queensland University
Mohammad G Rasul (Author) - Central Queensland University
Md Islam Jahirul (Author) - Central Queensland University
A.S.M. Sayem (Author) - Central Queensland University
Zakaria Quadir (Author) - Curtin University
Rezwanul Haque (Corresponding Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Publication details: Technologies, Vol.13(12), pp.1-12
Publisher: MDPI AG
Date published: 2025
DOI: 10.3390/technologies13120565
ISSN: 2227-7080
Copyright note: © 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/ licenses/by/4.0/).
Data Availability: The original contributions presented in this study are included in this article. Further inquiries can be directed to the corresponding author.
Organisation Unit: School of Science, Technology and Engineering
Language: English
Record Identifier: 991185843802621
Output Type: Journal article

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