|
NMT Community Archive >
Chemistry >
Pietrass, Tanja >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10136/44
|
| Title: | 2H Nuclear Magnetic Resonance Spectroscopy of Deuterium Adsorption on Single-Walled Carbon Nanotubes |
| Authors: | Shen, Kai
Pietrass, Tanja |
| Keywords: | Carbon nanotubes
Signal to noise ratio
Deuterium
Molecular weight
Adsorption
Catalysts
Oxidation
Purification
Paramagnetic resonance
Data reduction
Diffusion
Nuclear magnetic resonance
Spectroscopy |
| Issue Date: | 2004 |
| Publisher: | American Institute of Physics |
| Citation: | Applied Physics Letters, Volume 84, Number 9, pages 1567-1569 |
| Abstract: | 2H nuclear magnetic resonance (NMR) spectroscopy was employed to study the interaction between
deuterated hydrogen gas and single walled carbon nanotubes before and after purification.
Transmission electron micrographs revealed strong bundling of the tubes. After purification, very
little amorphous carbon and no graphitic particles were present, implying that the interactions
observed are truly due to the nanotubes. In the parent material, the NMR signal is dominated by
interaction of hydrogen with residual metal catalyst particles. For purified material, hydrogen in the
gas phase is discernible from adsorbed hydrogen. The two phases do not exchange with each other
on a ms time scale. The hydrogen molecules move among different adsorption sites, presumably
outer tube surfaces and interstitial channels. This process is diffusion limited in the pressure range
investigated. |
| URI: | http://hdl.handle.net/10136/44 |
| ISSN: | 0003-6951 |
| Appears in Collections: | Pietrass, Tanja
|
Files in This Item:
| File |
Description |
Size | Format |
|---|
| APL.pdf | | 134Kb | Adobe PDF | View/Open |
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|
