Synthesis of single-walled carbon nanotubes in rich hydrogen/air flames
Journal article
Zhang, Cen, Tian, Bo, Chong, Cheng Tung, Ding, Boning, Fan, Luming, Chang, Xin and Simone, Hochgreb 2020. Synthesis of single-walled carbon nanotubes in rich hydrogen/air flames. Materials Chemistry and Physics. https://doi.org/10.1016/j.matchemphys.2020.123479
| Authors | Zhang, Cen, Tian, Bo, Chong, Cheng Tung, Ding, Boning, Fan, Luming, Chang, Xin and Simone, Hochgreb |
|---|---|
| Abstract | We explore the production of single-walled carbon nanotubes (CNTs) in a stream surrounded by rich premixedlaminar H2/air flames using a feedstock containing ethanol and ferrocene. The as-produced nanomaterialswere characterised by Raman spectroscopy, transmission electron microscopy, scanning electron microscopyand X-ray diffraction. A formation window of equivalence ratios of 1.00–1.20 was identified, and single-walledCNT bundles with individual CNTs of an average diameter of 1 nm were observed. The formation of CNTswas accompanied by the production of highly crystalline Fe3O4nanoparticles of a size of 20–100 nm. Theinvestigation of the limiting factors for the CNT synthesis was carried out systematically, assisted by numericalmodelling. We conclude that the key factors affecting CNT synthesis are the surrounding flame temperatures and the concentration of carbon available for CNT nucleation. |
| Keywords | Carbon nanotubes, Flames, Combustion, Hydrogen, Pyrolysis |
| Year | 2020 |
| Journal | Materials Chemistry and Physics |
| Publisher | Elsevier |
| ISSN | 0254-0584 |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.matchemphys.2020.123479 |
| Web address (URL) | http://hdl.handle.net/10545/624978 |
| hdl:10545/624978 | |
| Publication dates | 27 Jun 2020 |
| Publication process dates | |
| Deposited | 10 Jul 2020, 14:19 |
| Accepted | 23 Jun 2020 |
| Contributors | University of Cambridge, University of Derby and Shanghai Jiao Tong University |
| File | File Access Level Open |
| File |
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