Unusual radial breathing mode signals in cm-scale carbon nanotube buckypapers filled with Fe3C single crystals: Investigating the role of chlorine
Fe3C filled carbon nanotubes (CNTs) self-organized into flexible-film-morphologies (buckypapers) have been proposed for numerous applications, these include flexible data-storage-devices, exchange-bias, spin-based-systems, flexible ferromagnetic-electrodes and others. However, despite the important...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-07-01
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| Series: | Carbon Trends |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667056922000359 |
| _version_ | 1811291989369421824 |
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| author | Jiaxin Song Shanling Wang Yi He Yixin Dai Wenkang Li Hansong Wu Wenjing He Aiqun Gu Jian Guo Jiqiu Wen Filippo S. Boi |
| author_facet | Jiaxin Song Shanling Wang Yi He Yixin Dai Wenkang Li Hansong Wu Wenjing He Aiqun Gu Jian Guo Jiqiu Wen Filippo S. Boi |
| author_sort | Jiaxin Song |
| collection | DOAJ |
| description | Fe3C filled carbon nanotubes (CNTs) self-organized into flexible-film-morphologies (buckypapers) have been proposed for numerous applications, these include flexible data-storage-devices, exchange-bias, spin-based-systems, flexible ferromagnetic-electrodes and others. However, despite the important progress, the significant concentration of Cl-containing-hydrocarbons which is needed for the buckypaper-growth (i.e. 1 to 10 ml) represents still an important challenge for industrial-production.Here we report the experimental-growth-parameters needed for the nucleation and growth of flexible Fe3C-filled-CNT buckypapers, under very-low-concentrations of dichlorobenzene, as low as 0.05 ml.By carefully estimating both the heating- and cooling-rate parameters of the chosen chemical-vapor-deposition (CVD) reactor, we demonstrate the identification of two active-growth-regions which allow for the simultaneous nucleation and growth of ferromagnetically-filled buckypapers. The obtained films comprise of selectively grown single-wall (active-region-1) and multiwall (active-region-2) CNTs. The simultaneous growth of the two types of buckypapers within the same reactor is discussed and attributed to the dynamics of dichlorobenzene-pyrolysis, which appears to yield a higher concentration of Cl-radicals in the active-region-1. In the buckypapers grown in the latter (active-region-1) we highlight an unusual separation between the first (inner) and second CNT-cylinders, with the HRTEM analyses revealing an anomalously-large interlayer-distance varying from ∼ 1.6 to ∼ 6.6 nm (an effective void between two CNT-cylinders). |
| first_indexed | 2024-04-13T04:38:44Z |
| format | Article |
| id | doaj.art-48f69baad7d142c49ee86bcf2e406e29 |
| institution | Directory Open Access Journal |
| issn | 2667-0569 |
| language | English |
| last_indexed | 2024-04-13T04:38:44Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Trends |
| spelling | doaj.art-48f69baad7d142c49ee86bcf2e406e292022-12-22T03:02:06ZengElsevierCarbon Trends2667-05692022-07-018100179Unusual radial breathing mode signals in cm-scale carbon nanotube buckypapers filled with Fe3C single crystals: Investigating the role of chlorineJiaxin Song0Shanling Wang1Yi He2Yixin Dai3Wenkang Li4Hansong Wu5Wenjing He6Aiqun Gu7Jian Guo8Jiqiu Wen9Filippo S. Boi10College of Physics, Sichuan University, Chengdu, ChinaAnalytical and Testing Center, Sichuan University, Chengdu, ChinaAnalytical and Testing Center, Sichuan University, Chengdu, ChinaCollege of Physics, Sichuan University, Chengdu, ChinaCollege of Physics, Sichuan University, Chengdu, ChinaCollege of Physics, Sichuan University, Chengdu, ChinaCollege of Physics, Sichuan University, Chengdu, ChinaAnalytical and Testing Center, Sichuan University, Chengdu, ChinaCollege of Physics, Sichuan University, Chengdu, ChinaAnalytical and Testing Center, Sichuan University, Chengdu, ChinaCollege of Physics, Sichuan University, Chengdu, China; Corresponding author.Fe3C filled carbon nanotubes (CNTs) self-organized into flexible-film-morphologies (buckypapers) have been proposed for numerous applications, these include flexible data-storage-devices, exchange-bias, spin-based-systems, flexible ferromagnetic-electrodes and others. However, despite the important progress, the significant concentration of Cl-containing-hydrocarbons which is needed for the buckypaper-growth (i.e. 1 to 10 ml) represents still an important challenge for industrial-production.Here we report the experimental-growth-parameters needed for the nucleation and growth of flexible Fe3C-filled-CNT buckypapers, under very-low-concentrations of dichlorobenzene, as low as 0.05 ml.By carefully estimating both the heating- and cooling-rate parameters of the chosen chemical-vapor-deposition (CVD) reactor, we demonstrate the identification of two active-growth-regions which allow for the simultaneous nucleation and growth of ferromagnetically-filled buckypapers. The obtained films comprise of selectively grown single-wall (active-region-1) and multiwall (active-region-2) CNTs. The simultaneous growth of the two types of buckypapers within the same reactor is discussed and attributed to the dynamics of dichlorobenzene-pyrolysis, which appears to yield a higher concentration of Cl-radicals in the active-region-1. In the buckypapers grown in the latter (active-region-1) we highlight an unusual separation between the first (inner) and second CNT-cylinders, with the HRTEM analyses revealing an anomalously-large interlayer-distance varying from ∼ 1.6 to ∼ 6.6 nm (an effective void between two CNT-cylinders).http://www.sciencedirect.com/science/article/pii/S2667056922000359Carbon nanotubesIron carbideBuckypapersSingle wallMultiwallchlorine |
| spellingShingle | Jiaxin Song Shanling Wang Yi He Yixin Dai Wenkang Li Hansong Wu Wenjing He Aiqun Gu Jian Guo Jiqiu Wen Filippo S. Boi Unusual radial breathing mode signals in cm-scale carbon nanotube buckypapers filled with Fe3C single crystals: Investigating the role of chlorine Carbon Trends Carbon nanotubes Iron carbide Buckypapers Single wall Multiwall chlorine |
| title | Unusual radial breathing mode signals in cm-scale carbon nanotube buckypapers filled with Fe3C single crystals: Investigating the role of chlorine |
| title_full | Unusual radial breathing mode signals in cm-scale carbon nanotube buckypapers filled with Fe3C single crystals: Investigating the role of chlorine |
| title_fullStr | Unusual radial breathing mode signals in cm-scale carbon nanotube buckypapers filled with Fe3C single crystals: Investigating the role of chlorine |
| title_full_unstemmed | Unusual radial breathing mode signals in cm-scale carbon nanotube buckypapers filled with Fe3C single crystals: Investigating the role of chlorine |
| title_short | Unusual radial breathing mode signals in cm-scale carbon nanotube buckypapers filled with Fe3C single crystals: Investigating the role of chlorine |
| title_sort | unusual radial breathing mode signals in cm scale carbon nanotube buckypapers filled with fe3c single crystals investigating the role of chlorine |
| topic | Carbon nanotubes Iron carbide Buckypapers Single wall Multiwall chlorine |
| url | http://www.sciencedirect.com/science/article/pii/S2667056922000359 |
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