Arani, HF, Mirhabibi, AR, Collins, S et al. (6 more authors) (2017) Enhancement in graphitization of coal tar pitch by functionalized carbon nanotubes. RSC Advances, 7 (9). pp. 5533-5540.
Abstract
In this study, the influence of the addition of carbon nanotubes (CNTs) and carbon black (CB) on the graphitization temperature and microstructure of coal tar pitch (CTP) are investigated. X-ray diffraction patterns of carbon residues indicate that minimum interlayer spacing (d002) values are obtained at 2000°C for CTP/CNT. Moreover, the Raman spectrum of CTP/CNTs is similar to graphite, and the relative intensity of Raman lines shows that CTP/CB is less graphitized at 2000°C. In addition, scanning electron microscopy images show that when CB is added sample textures tend to disordered morphologies. However, CNTs, not only improve the morphology of CTP, but also act as nuclei for the growth of graphite flaky crystallites. The role of the CTP/CNT interface and the defects of CNTs on the graphitization degree are studied using transmission electron microscopy, and a mechanism for the graphitization of CTP, in the presence of CNTs, is proposed.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | The journal RSC Advances is (c) The Royal Society of Chemistry 2017. This Open Access Article is licensed under a Creative Commons Attribution-Non Commercial 3.0 Unported Licence (https://creativecommons.org/licenses/by-nc/3.0/) |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 24 Jan 2017 15:50 |
Last Modified: | 05 Oct 2017 15:38 |
Published Version: | https://doi.org/10.1039/C6RA25441A |
Status: | Published |
Publisher: | Royal Society of Chemistry |
Identification Number: | 10.1039/C6RA25441A |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:111023 |