A comparison study of catalytic oxidation and acid oxidation to prepare carbon nanotubes for filling with Ru nanoparticles
Article
Article Title | A comparison study of catalytic oxidation and acid oxidation to prepare carbon nanotubes for filling with Ru nanoparticles |
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ERA Journal ID | 1412 |
Article Category | Article |
Authors | Wang, Li (Author), Ge, Lei (Author), Rufford, Thomas E. (Author), Chen, Jiuling (Author), Zhou, Wei (Author), Zhu, Zhonghua (Author) and Rudolph, Victor (Author) |
Journal Title | Carbon |
Journal Citation | 49 (6), pp. 2022-2032 |
Number of Pages | 11 |
Year | 2011 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0008-6223 |
1873-3891 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.carbon.2011.01.028 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0008622311000479 |
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. |
Keywords | comparison study; filling ratio; fourier; FTIR; multi-wall carbon nanotubes; nanotube lengths; oxidation pre-treatment; oxidation process; phenol groups; Ru catalysts; Ru nanoparticles; TEM; thermal treatment; tube ends; wet impregnation; XPS; carbon nanotubes; catalysts; defects; filling; functional groups; infrared spectroscopy; multiwalled carbon nanotubes (MWCN); oxygen; phenols; transmission electron microscopy; x-ray photoelectron spectroscopy; catalytic oxidation |
ANZSRC Field of Research 2020 | 400408. Reaction engineering (excl. nuclear reactions) |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3z53/a-comparison-study-of-catalytic-oxidation-and-acid-oxidation-to-prepare-carbon-nanotubes-for-filling-with-ru-nanoparticles
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