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https://doi.org/10.3938/NPSM.70.137
Study on the Temperature Dependence of Graphite Synthesis on the Surface of Al$ _{2}$O$ _{3}$ Nanoparticles by Thermal Chemical Vapor Deposition
New Phys.: Sae Mulli 2020; 70: 137~142
Published online February 28, 2020;  https://doi.org/10.3938/NPSM.70.137
© 2020 New Physics: Sae Mulli.

Chang-Duk KIM*, Younjung JO

Department of Physics, Kyungpook National University, Daegu 41566, Korea
Correspondence to: duks@knu.ac.kr
Received December 5, 2019; Revised December 31, 2019; Accepted January 6, 2020.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The effect of temperature on the synthesis of graphite on the surfaces of aluminum oxide (Al$ _{2}$O$ _{3}$) nanoparticles by using thermal chemical vapor deposition was investigated. Graphite coated the entire surfaces of the Al$ _{2}$O$ _{3}$ nanoparticles. The effect of temperature on the graphite was confirmed by varying the temperature from 800 to 1100 $ ^{\circ}$C in 100 $ ^{\circ}$C increments. Changing the synthesis temperature induced changes in the properties of the surface graphite and the Al$ _{2}$O$ _{3}$ nanoparticles. X-ray photoelectron spectroscopic (XPS) analysis confirmed that Al$ _{2}$O$ _{3}$ nanoparticles reacted with carbon gas as the synthesis temperature was increased. Carbon gas with Al$ _{2}$O$ _{3}$ nanoparticles was observed began at 900 $ ^{\circ}$C and to stop at 1100 $^{\circ}$C. These differences confirmed that the formation of graphite on the Al$ _{2}$O$ _{3}$ nanoparticles’ surfaces was temperature dependent. Analyses using Raman spectroscopy and transmission electron microscopy (TEM) were conducted to compare the states of the synthesized graphite.
PACS numbers: 81.05.-t, 62.25.-g, 68.35.-p
Keywords: Graphene, Graphite, Carbon material, Al$ _{2}$O$ _{3}$, Thermal-chemical vapor deposition


March 2020, 70 (3)
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