Effect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis method

The Flame pyrolysis method used to synthesize carbon nanotubes was studied in this work. In order to improve the quality of synthesized carbon nanotubes, it is important to change the corresponding natures of the catalyst. Two catalyst preparation methods, namely, the sol-gel method and the impregna...

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Main Authors:	Yonghong Guo, Gang Zhai, Yu Ru, Chuyu Wu, Xiaowei Jia, Yaping Sun, Jiawen Yu, Zhizhong Kang, Baomin Sun
Format:	Article
Language:	English
Published:	AIP Publishing LLC 2018-03-01
Series:	AIP Advances
Online Access:	http://dx.doi.org/10.1063/1.5020936

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record_format	Article
spelling	doaj-3935277161c84b0fbdf833fa31aa57222020-11-24T22:47:19ZengAIP Publishing LLCAIP Advances2158-32262018-03-0183035111035111-1210.1063/1.5020936037803ADVEffect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis methodYonghong Guo0Gang Zhai1Yu Ru2Chuyu Wu3Xiaowei Jia4Yaping Sun5Jiawen Yu6Zhizhong Kang7Baomin Sun8Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, ChinaKey Laboratory of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Beijing 102206, ChinaThe Flame pyrolysis method used to synthesize carbon nanotubes was studied in this work. In order to improve the quality of synthesized carbon nanotubes, it is important to change the corresponding natures of the catalyst. Two catalyst preparation methods, namely, the sol-gel method and the impregnation method, were compared in this experiment. The properties of the catalyst are analyzed in depth by energy dispersive spectrometer (EDS), x-ray diffraction (XRD), temperature program reduction (TPR). The generation of carbon nanotubes was systematically analysed through scanning electron microscope (SEM), molecule dynamics (MD), raman spectroscopy and transmission electron microscope (TEM). The results show that the catalysts prepared by the impregnation method are stickier, dispersed and easier to dip onto the probe or substrate, which is beneficial for the large-scale production of carbon tubes. The specific surface area of alumina is larger and the iron and molybdenum oxide are more evenly dispersed on the surface of alumina. The carbon nanotubes produced by the catalysts prepared by impregnation method are flatter and have less impurities. The ratio of ID/IG+ is 29.7% lower than that of the sol-gel method in the Raman spectra. The TEM statistics show that the average diameter of the carbon tubes decreases by 23.3%. Therefore, the impregnation method can improve the quality of carbon nanotubes in the case of a similar degree of difficulty in the preparation of the catalyst.http://dx.doi.org/10.1063/1.5020936
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yonghong Guo Gang Zhai Yu Ru Chuyu Wu Xiaowei Jia Yaping Sun Jiawen Yu Zhizhong Kang Baomin Sun
spellingShingle	Yonghong Guo Gang Zhai Yu Ru Chuyu Wu Xiaowei Jia Yaping Sun Jiawen Yu Zhizhong Kang Baomin Sun Effect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis method AIP Advances
author_facet	Yonghong Guo Gang Zhai Yu Ru Chuyu Wu Xiaowei Jia Yaping Sun Jiawen Yu Zhizhong Kang Baomin Sun
author_sort	Yonghong Guo
title	Effect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis method
title_short	Effect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis method
title_full	Effect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis method
title_fullStr	Effect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis method
title_full_unstemmed	Effect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis method
title_sort	effect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis method
publisher	AIP Publishing LLC
series	AIP Advances
issn	2158-3226
publishDate	2018-03-01
description	The Flame pyrolysis method used to synthesize carbon nanotubes was studied in this work. In order to improve the quality of synthesized carbon nanotubes, it is important to change the corresponding natures of the catalyst. Two catalyst preparation methods, namely, the sol-gel method and the impregnation method, were compared in this experiment. The properties of the catalyst are analyzed in depth by energy dispersive spectrometer (EDS), x-ray diffraction (XRD), temperature program reduction (TPR). The generation of carbon nanotubes was systematically analysed through scanning electron microscope (SEM), molecule dynamics (MD), raman spectroscopy and transmission electron microscope (TEM). The results show that the catalysts prepared by the impregnation method are stickier, dispersed and easier to dip onto the probe or substrate, which is beneficial for the large-scale production of carbon tubes. The specific surface area of alumina is larger and the iron and molybdenum oxide are more evenly dispersed on the surface of alumina. The carbon nanotubes produced by the catalysts prepared by impregnation method are flatter and have less impurities. The ratio of ID/IG+ is 29.7% lower than that of the sol-gel method in the Raman spectra. The TEM statistics show that the average diameter of the carbon tubes decreases by 23.3%. Therefore, the impregnation method can improve the quality of carbon nanotubes in the case of a similar degree of difficulty in the preparation of the catalyst.
url	http://dx.doi.org/10.1063/1.5020936
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Effect of different catalyst preparation methods on the synthesis of carbon nanotubes with the flame pyrolysis method

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