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Title: Growth of single and double walled carbon nanotubes over Co/V/MgO catalysts

Abstract

Highlights: {yields} Co/V/MgO has remarkable catalytic activity on the growth of SWCNTs and DWCNTs. {yields} The diameter of CNTs can be controlled by adjusting molar ratio of Co-V to MgO. {yields} The formation of C{sub 7}V{sub 8} is critical to the synthesis of thin CNTs. -- Abstract: High quality single walled carbon nanotubes (SWCNTs) and double walled carbon nanotubes (DWCNTs) were synthesized on Co/V/MgO catalysts by catalytic decomposition of CH{sub 4} in H{sub 2}. Raman spectroscopy data revealed that the diameters of as-prepared SWCNTs are 1.28 and 0.73 nm. The diameter value of DWCNTs from Raman analysis also showed a narrow diameter distribution. Using field emission transmission electron microscopy (TEM), it was found that the diameter of carbon nanotubes can be controlled mainly by adjusting the molar ratio of Co-V versus the MgO support. The structure properties of catalysts were examined by X-ray diffraction (XRD). The formation of C{sub 7}V{sub 8} may play an important role in preserving carbon in the catalyst particle and favoring the dissociation balance of CH{sub 4}.

Authors:
 [1]; ; ;  [2]
  1. School of Pharmaceutical and Chemical Engineering, Taizhou University, Zhejiang 317000 (China)
  2. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Renmin Road, Chengdu, Sichuan 610041 (China)
Publication Date:
OSTI Identifier:
22210119
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 46; Journal Issue: 11; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON NANOTUBES; CATALYSTS; FIELD EMISSION; MAGNESIUM OXIDES; METHANE; RAMAN SPECTROSCOPY; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

You, Yujing, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Renmin Road, Chengdu, Sichuan 610041, Qu, Meizhen, Zhou, Gumin, and Lin, Haoqiang. Growth of single and double walled carbon nanotubes over Co/V/MgO catalysts. United States: N. p., 2011. Web. doi:10.1016/J.MATERRESBULL.2011.07.011.
You, Yujing, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Renmin Road, Chengdu, Sichuan 610041, Qu, Meizhen, Zhou, Gumin, & Lin, Haoqiang. Growth of single and double walled carbon nanotubes over Co/V/MgO catalysts. United States. doi:10.1016/J.MATERRESBULL.2011.07.011.
You, Yujing, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Renmin Road, Chengdu, Sichuan 610041, Qu, Meizhen, Zhou, Gumin, and Lin, Haoqiang. Tue . "Growth of single and double walled carbon nanotubes over Co/V/MgO catalysts". United States. doi:10.1016/J.MATERRESBULL.2011.07.011.
@article{osti_22210119,
title = {Growth of single and double walled carbon nanotubes over Co/V/MgO catalysts},
author = {You, Yujing and Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Renmin Road, Chengdu, Sichuan 610041 and Qu, Meizhen and Zhou, Gumin and Lin, Haoqiang},
abstractNote = {Highlights: {yields} Co/V/MgO has remarkable catalytic activity on the growth of SWCNTs and DWCNTs. {yields} The diameter of CNTs can be controlled by adjusting molar ratio of Co-V to MgO. {yields} The formation of C{sub 7}V{sub 8} is critical to the synthesis of thin CNTs. -- Abstract: High quality single walled carbon nanotubes (SWCNTs) and double walled carbon nanotubes (DWCNTs) were synthesized on Co/V/MgO catalysts by catalytic decomposition of CH{sub 4} in H{sub 2}. Raman spectroscopy data revealed that the diameters of as-prepared SWCNTs are 1.28 and 0.73 nm. The diameter value of DWCNTs from Raman analysis also showed a narrow diameter distribution. Using field emission transmission electron microscopy (TEM), it was found that the diameter of carbon nanotubes can be controlled mainly by adjusting the molar ratio of Co-V versus the MgO support. The structure properties of catalysts were examined by X-ray diffraction (XRD). The formation of C{sub 7}V{sub 8} may play an important role in preserving carbon in the catalyst particle and favoring the dissociation balance of CH{sub 4}.},
doi = {10.1016/J.MATERRESBULL.2011.07.011},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 46,
place = {United States},
year = {2011},
month = {11}
}