Journal article 1467 views
Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes
Journal of Experimental Nanoscience, Volume: 10, Issue: 1, Pages: 66 - 76
Swansea University Author:
Andrew Barron
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DOI (Published version): 10.1080/17458080.2013.794979
Abstract
Quantification using SEM of single walled carbon nanotubes grown per unit area using a Co-Fe (50:50) catalyst system, prepared by the incorporation of the appropriate metal salts into a Spin-On Glass substrate, at 900 °C. The effects of substrate, as well as catalyst precursor concentration, were in...
| Published in: | Journal of Experimental Nanoscience |
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| Published: |
2013
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| Online Access: |
http://www.tandfonline.com/doi/abs/10.1080/17458080.2013.794979 |
| URI: | https://cronfa.swan.ac.uk/Record/cronfa22196 |
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| Abstract: |
Quantification using SEM of single walled carbon nanotubes grown per unit area using a Co-Fe (50:50) catalyst system, prepared by the incorporation of the appropriate metal salts into a Spin-On Glass substrate, at 900 °C. The effects of substrate, as well as catalyst precursor concentration, were investigated. SWNT growth density is maximised with a catalyst precursor concentration associated with the formation of catalyst nanoparticles of a critical size for SWNT nucleation. Samples were subjected to secondary growth, using a range of hydrogen:methane ratios to determine the optimum precursor composition. It was found that nucleation and growth stages are optimal under different conditions. Optimum conditions for nucleation resulted in >10× increase in SWNT density. Optimization is dependent on temperature and the partial pressure of reagent gas species. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
1 |
| Start Page: |
66 |
| End Page: |
76 |