Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate
Abstract An efficient and reproducible growth of vertically aligned carbon nanotubes by CCVD requires accurate and specific setting of the synthesis parameters and the properties of catalyst thin layers. In this work, the growth of vertically aligned carbon nanotubes onto AZO (= aluminum doped zinc...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-03-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-57862-w |
| _version_ | 1797233579098374144 |
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| author | Lilla Nánai Zoltán Németh George Kaptay Klara Hernadi |
| author_facet | Lilla Nánai Zoltán Németh George Kaptay Klara Hernadi |
| author_sort | Lilla Nánai |
| collection | DOAJ |
| description | Abstract An efficient and reproducible growth of vertically aligned carbon nanotubes by CCVD requires accurate and specific setting of the synthesis parameters and the properties of catalyst thin layers. In this work, the growth of vertically aligned carbon nanotubes onto AZO (= aluminum doped zinc oxide) glass substrate covered by Al2O3 and Fe-Co catalyst layer system is presented. Investigation of the effect of catalyst composition and synthesis temperature on CVD growth revealed the optimum condition of the synthesis. The analysis of as-prepared samples by SEM, TEM and Raman spectroscopy was carried out to prove the structure and quality of carbon deposit. Theoretical considerations have supported speculative ideas about the role of the support layer, the transformation of the catalyst layer in the presence of hydrogen gas and the growth mechanism of carbon nanotubes. The mechanism of CNT growth is modelled and the order of magnitude of experimentally observed vertical linear growth rate of CNT (several nm/s) is reproduced. |
| first_indexed | 2024-04-24T16:18:24Z |
| format | Article |
| id | doaj.art-2bc68339f40647039cc579d0cd70c393 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-24T16:18:24Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-2bc68339f40647039cc579d0cd70c3932024-03-31T11:20:10ZengNature PortfolioScientific Reports2045-23222024-03-0114111810.1038/s41598-024-57862-wExperimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrateLilla Nánai0Zoltán Németh1George Kaptay2Klara Hernadi3Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of MiskolcAdvanced Materials and Intelligent Technologies Higher Education and Industrial Cooperation Centre, University of MiskolcInstitute of Physical Metallurgy, Metal Forming and Nanotechnology, University of MiskolcInstitute of Physical Metallurgy, Metal Forming and Nanotechnology, University of MiskolcAbstract An efficient and reproducible growth of vertically aligned carbon nanotubes by CCVD requires accurate and specific setting of the synthesis parameters and the properties of catalyst thin layers. In this work, the growth of vertically aligned carbon nanotubes onto AZO (= aluminum doped zinc oxide) glass substrate covered by Al2O3 and Fe-Co catalyst layer system is presented. Investigation of the effect of catalyst composition and synthesis temperature on CVD growth revealed the optimum condition of the synthesis. The analysis of as-prepared samples by SEM, TEM and Raman spectroscopy was carried out to prove the structure and quality of carbon deposit. Theoretical considerations have supported speculative ideas about the role of the support layer, the transformation of the catalyst layer in the presence of hydrogen gas and the growth mechanism of carbon nanotubes. The mechanism of CNT growth is modelled and the order of magnitude of experimentally observed vertical linear growth rate of CNT (several nm/s) is reproduced.https://doi.org/10.1038/s41598-024-57862-wVertically aligned carbon nanotubesAluminum doped zinc oxideCatalytic chemical vapor depositionCNT growth mechanism |
| spellingShingle | Lilla Nánai Zoltán Németh George Kaptay Klara Hernadi Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate Scientific Reports Vertically aligned carbon nanotubes Aluminum doped zinc oxide Catalytic chemical vapor deposition CNT growth mechanism |
| title | Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate |
| title_full | Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate |
| title_fullStr | Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate |
| title_full_unstemmed | Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate |
| title_short | Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate |
| title_sort | experimental and theoretical aspects of the growth of vertically aligned cnts by ccvd on azo substrate |
| topic | Vertically aligned carbon nanotubes Aluminum doped zinc oxide Catalytic chemical vapor deposition CNT growth mechanism |
| url | https://doi.org/10.1038/s41598-024-57862-w |
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