Effect of lattice structure of silicon carbide on crystal formation of carbide-derived carbon

Min Gun Jeong; Seo Hyun Yoon; Yoon Soo Chun; Eung Seok Lee; Dae Soon Lim

doi:10.1016/j.carbon.2014.07.016

Effect of lattice structure of silicon carbide on crystal formation of carbide-derived carbon

Min Gun Jeong, Seo Hyun Yoon, Yoon Soo Chun, Eung Seok Lee, Dae Soon Lim

Honorary professors

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Nanostructured carbide-derived carbons (CDCs) were synthesized from hexagonal SiC (α-SiC) and cubic SiC (β-SiC) powders via chlorination at temperatures between 900 and 1200 °C. The content of the sp²-and sp³-bonded carbon phases and their crystallinity were analyzed by Raman spectroscopy. The nanocrystalline phases of the synthesized CDCs were observed and characterized by transmission electron microscopy and electron energy-loss spectroscopy. The morphology of CDCs showed interesting features that varied with the starting SiC powder. Diamond nanocrystals were more frequently observed in α-SiC-derived carbons than in β-SiC-derived carbons, and the rate of graphitization was affected by the SiC polytype, synthesis temperature and hydrogen content. A possible mechanism responsible for the observed results was also investigated.

Original language	English
Pages (from-to)	19-27
Number of pages	9
Journal	Carbon
Volume	79
Issue number	1
DOIs	https://doi.org/10.1016/j.carbon.2014.07.016
Publication status	Published - 2014

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)

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title = "Effect of lattice structure of silicon carbide on crystal formation of carbide-derived carbon",

abstract = "Nanostructured carbide-derived carbons (CDCs) were synthesized from hexagonal SiC (α-SiC) and cubic SiC (β-SiC) powders via chlorination at temperatures between 900 and 1200 °C. The content of the sp2-and sp3-bonded carbon phases and their crystallinity were analyzed by Raman spectroscopy. The nanocrystalline phases of the synthesized CDCs were observed and characterized by transmission electron microscopy and electron energy-loss spectroscopy. The morphology of CDCs showed interesting features that varied with the starting SiC powder. Diamond nanocrystals were more frequently observed in α-SiC-derived carbons than in β-SiC-derived carbons, and the rate of graphitization was affected by the SiC polytype, synthesis temperature and hydrogen content. A possible mechanism responsible for the observed results was also investigated.",

author = "Jeong, {Min Gun} and Yoon, {Seo Hyun} and Chun, {Yoon Soo} and Lee, {Eung Seok} and Lim, {Dae Soon}",

note = "Funding Information: This work was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Commerce, Industry and Energy , Republic of Korea. Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd. All rights reserved. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "2014",

doi = "10.1016/j.carbon.2014.07.016",

language = "English",

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pages = "19--27",

journal = "Carbon",

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T1 - Effect of lattice structure of silicon carbide on crystal formation of carbide-derived carbon

AU - Jeong, Min Gun

AU - Yoon, Seo Hyun

AU - Chun, Yoon Soo

AU - Lee, Eung Seok

AU - Lim, Dae Soon

N1 - Funding Information: This work was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Commerce, Industry and Energy , Republic of Korea. Publisher Copyright: © 2014 Elsevier Ltd. All rights reserved. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2014

Y1 - 2014

N2 - Nanostructured carbide-derived carbons (CDCs) were synthesized from hexagonal SiC (α-SiC) and cubic SiC (β-SiC) powders via chlorination at temperatures between 900 and 1200 °C. The content of the sp2-and sp3-bonded carbon phases and their crystallinity were analyzed by Raman spectroscopy. The nanocrystalline phases of the synthesized CDCs were observed and characterized by transmission electron microscopy and electron energy-loss spectroscopy. The morphology of CDCs showed interesting features that varied with the starting SiC powder. Diamond nanocrystals were more frequently observed in α-SiC-derived carbons than in β-SiC-derived carbons, and the rate of graphitization was affected by the SiC polytype, synthesis temperature and hydrogen content. A possible mechanism responsible for the observed results was also investigated.

AB - Nanostructured carbide-derived carbons (CDCs) were synthesized from hexagonal SiC (α-SiC) and cubic SiC (β-SiC) powders via chlorination at temperatures between 900 and 1200 °C. The content of the sp2-and sp3-bonded carbon phases and their crystallinity were analyzed by Raman spectroscopy. The nanocrystalline phases of the synthesized CDCs were observed and characterized by transmission electron microscopy and electron energy-loss spectroscopy. The morphology of CDCs showed interesting features that varied with the starting SiC powder. Diamond nanocrystals were more frequently observed in α-SiC-derived carbons than in β-SiC-derived carbons, and the rate of graphitization was affected by the SiC polytype, synthesis temperature and hydrogen content. A possible mechanism responsible for the observed results was also investigated.

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JO - Carbon

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SN - 0008-6223

IS - 1

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Effect of lattice structure of silicon carbide on crystal formation of carbide-derived carbon

Abstract

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