Purification of single-walled carbon nanotubes
We present a study of purification of single-walled carbon nanotubes (SWCNTs) using different oxidation temperatures and chemical treatments. We have developed a simple two annealing-steps procedure resulting in high nanotube purity with minimal sample loss. The process involves annealing the SWCNTs...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Cambridge University Press
2011
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/44548 |
| _version_ | 1848757032845312000 |
|---|---|
| author | Yaya, A. Ewels, C. Wagner, Ph. Suarez-Martinez, Irene Tekley, G. Jensen, L.R. |
| author_facet | Yaya, A. Ewels, C. Wagner, Ph. Suarez-Martinez, Irene Tekley, G. Jensen, L.R. |
| author_sort | Yaya, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present a study of purification of single-walled carbon nanotubes (SWCNTs) using different oxidation temperatures and chemical treatments. We have developed a simple two annealing-steps procedure resulting in high nanotube purity with minimal sample loss. The process involves annealing the SWCNTs at 300˚C for 2 h with subsequent reflux in 6 M HCl at 130˚C, followed by further annealing at 350˚C for 1 h with reflux in 6 M HCl at 130˚C. The process results in effective removal of carbon impurities and metal particles which are associated with SWCNTs production. The process is less time-consuming (complete in 4.5 h) than conventional acid purification methods which require over 5 h, and less destructive than conventional methods with a yield of 26%. SWCNT purity was assessed using Raman spectroscopy, thermogravimetry and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy. |
| first_indexed | 2025-11-14T09:21:39Z |
| format | Journal Article |
| id | curtin-20.500.11937-44548 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:21:39Z |
| publishDate | 2011 |
| publisher | Cambridge University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-445482017-09-13T15:58:40Z Purification of single-walled carbon nanotubes Yaya, A. Ewels, C. Wagner, Ph. Suarez-Martinez, Irene Tekley, G. Jensen, L.R. single-walled carbon nanotubes nanotubes purification We present a study of purification of single-walled carbon nanotubes (SWCNTs) using different oxidation temperatures and chemical treatments. We have developed a simple two annealing-steps procedure resulting in high nanotube purity with minimal sample loss. The process involves annealing the SWCNTs at 300˚C for 2 h with subsequent reflux in 6 M HCl at 130˚C, followed by further annealing at 350˚C for 1 h with reflux in 6 M HCl at 130˚C. The process results in effective removal of carbon impurities and metal particles which are associated with SWCNTs production. The process is less time-consuming (complete in 4.5 h) than conventional acid purification methods which require over 5 h, and less destructive than conventional methods with a yield of 26%. SWCNT purity was assessed using Raman spectroscopy, thermogravimetry and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy. 2011 Journal Article http://hdl.handle.net/20.500.11937/44548 10.1051/epjap/2011100482 Cambridge University Press fulltext |
| spellingShingle | single-walled carbon nanotubes nanotubes purification Yaya, A. Ewels, C. Wagner, Ph. Suarez-Martinez, Irene Tekley, G. Jensen, L.R. Purification of single-walled carbon nanotubes |
| title | Purification of single-walled carbon nanotubes |
| title_full | Purification of single-walled carbon nanotubes |
| title_fullStr | Purification of single-walled carbon nanotubes |
| title_full_unstemmed | Purification of single-walled carbon nanotubes |
| title_short | Purification of single-walled carbon nanotubes |
| title_sort | purification of single-walled carbon nanotubes |
| topic | single-walled carbon nanotubes nanotubes purification |
| url | http://hdl.handle.net/20.500.11937/44548 |