A comparison study of catalytic oxidation and acid oxidation to prepare carbon nanotubes for filling with Ru nanoparticles

Wang, L, Ge, L, Rufford, TE, Chen, JL, Zhou, W, Zhu, ZH and Rudolph, V (2011) A comparison study of catalytic oxidation and acid oxidation to prepare carbon nanotubes for filling with Ru nanoparticles. Carbon, 49 6: 2022-2032. doi:10.1016/j.carbon.2011.01.028


Author Wang, L
Ge, L
Rufford, TE
Chen, JL
Zhou, W
Zhu, ZH
Rudolph, V
Title A comparison study of catalytic oxidation and acid oxidation to prepare carbon nanotubes for filling with Ru nanoparticles
Journal name Carbon   Check publisher's open access policy
ISSN 0008-6223
1873-3891
Publication date 2011-05
Sub-type Article (original research)
DOI 10.1016/j.carbon.2011.01.028
Volume 49
Issue 6
Start page 2022
End page 2032
Total pages 11
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Collection year 2012
Language eng
Abstract Ru catalyst confined within the channels of multiwall carbon nanotubes (MWCNTs) is prepared by opening tube ends via mixed concentrated acid oxidation or catalytic oxidation, followed by filling via wet impregnation. The catalyst filling ratio is characterized by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The defects and functional groups are detected and quantified by Raman, fourier transformer infrared spectroscopy (FTIR) and XPS. The results show that high catalyst filling efficiency (∼80%) can be achieved with catalytic oxidation pre-treatment. The acid oxidation process can introduce more oxygen-containing functional groups such carboxyl and phenol groups. Both FTIR and XPS provide evidence for functional groups removal during thermal treatment. The effects of the nanotube length distributions, defects and functional groups on filling efficiency have been discussed intensively. © 2011 Elsevier Ltd. All rights reserved.
Keyword Activated carbons
Metal nanoparticles
Surface-chemistry
Raman-spectra
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2012 Collection
 
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Created: Mon, 23 May 2011, 17:22:44 EST by Professor Victor Rudolph on behalf of School of Chemical Engineering