Study of surface defects and crystallinity of MWCNTs growth in FCCVD
This research investigated the structural growth of multiwalled carbon nanotubes (MWCNTs) in a double stage horizontal chemical vapor deposition (CVD) reactor. Ethylene was used as a carbon source for nucleation of nanotubes. Ferrocene catalyst weight was varied from 0.1 to 0.2 g to demonstrate the...
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| Format: | Article |
| Language: | English |
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De Gruyter
2017-11-01
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| Series: | Science and Engineering of Composite Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/secm-2014-0253 |
| _version_ | 1818682624081657856 |
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| author | Shukrullah Shazia Mohamed Norani Muti Shaharun Maizatul Shima Naz Muhammad Yasin |
| author_facet | Shukrullah Shazia Mohamed Norani Muti Shaharun Maizatul Shima Naz Muhammad Yasin |
| author_sort | Shukrullah Shazia |
| collection | DOAJ |
| description | This research investigated the structural growth of multiwalled carbon nanotubes (MWCNTs) in a double stage horizontal chemical vapor deposition (CVD) reactor. Ethylene was used as a carbon source for nucleation of nanotubes. Ferrocene catalyst weight was varied from 0.1 to 0.2 g to demonstrate the growth of MWCNTs on Si/SiO2/Al2O3 substrate. The obtained data revealed that the weight of the catalyst significantly affects the diameter, crystallinity, alignment and yield of the nanotubes. Lower inner-shell spacing and the ratio of D-Raman peak intensity and G-Raman peak intensity (ID/IG ratio) were obtained with 0.15 g of ferrocene, which was an indication of relatively pure carbon nanotubes (CNTs) growth. Raman spectra also confirmed the highly crystalline and relatively pure CNTs structures with ID/IG ratio of 0.700. TGA data revealed the formation of 97% pure nanotubes with oxidation temperature of 620°C. However, above and below the optimum (0.15 g of ferrocene), some of the grown CNTs were found defective and few black spots were also seen in TEM micrographs. |
| first_indexed | 2024-12-17T10:21:48Z |
| format | Article |
| id | doaj.art-938544e9995f4bad91a79624cd00dbfb |
| institution | Directory Open Access Journal |
| issn | 0792-1233 2191-0359 |
| language | English |
| last_indexed | 2024-12-17T10:21:48Z |
| publishDate | 2017-11-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Science and Engineering of Composite Materials |
| spelling | doaj.art-938544e9995f4bad91a79624cd00dbfb2022-12-21T21:52:47ZengDe GruyterScience and Engineering of Composite Materials0792-12332191-03592017-11-0124684585110.1515/secm-2014-0253Study of surface defects and crystallinity of MWCNTs growth in FCCVDShukrullah Shazia0Mohamed Norani Muti1Shaharun Maizatul Shima2Naz Muhammad Yasin3Center of Innovative Nanostructures and Nanodevices, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, MalaysiaCenter of Innovative Nanostructures and Nanodevices, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, MalaysiaDepartment of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, MalaysiaDepartment of Mechanical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, MalaysiaThis research investigated the structural growth of multiwalled carbon nanotubes (MWCNTs) in a double stage horizontal chemical vapor deposition (CVD) reactor. Ethylene was used as a carbon source for nucleation of nanotubes. Ferrocene catalyst weight was varied from 0.1 to 0.2 g to demonstrate the growth of MWCNTs on Si/SiO2/Al2O3 substrate. The obtained data revealed that the weight of the catalyst significantly affects the diameter, crystallinity, alignment and yield of the nanotubes. Lower inner-shell spacing and the ratio of D-Raman peak intensity and G-Raman peak intensity (ID/IG ratio) were obtained with 0.15 g of ferrocene, which was an indication of relatively pure carbon nanotubes (CNTs) growth. Raman spectra also confirmed the highly crystalline and relatively pure CNTs structures with ID/IG ratio of 0.700. TGA data revealed the formation of 97% pure nanotubes with oxidation temperature of 620°C. However, above and below the optimum (0.15 g of ferrocene), some of the grown CNTs were found defective and few black spots were also seen in TEM micrographs.https://doi.org/10.1515/secm-2014-0253ethylenefccvdferrocenemwcntstga thermogram |
| spellingShingle | Shukrullah Shazia Mohamed Norani Muti Shaharun Maizatul Shima Naz Muhammad Yasin Study of surface defects and crystallinity of MWCNTs growth in FCCVD Science and Engineering of Composite Materials ethylene fccvd ferrocene mwcnts tga thermogram |
| title | Study of surface defects and crystallinity of MWCNTs growth in FCCVD |
| title_full | Study of surface defects and crystallinity of MWCNTs growth in FCCVD |
| title_fullStr | Study of surface defects and crystallinity of MWCNTs growth in FCCVD |
| title_full_unstemmed | Study of surface defects and crystallinity of MWCNTs growth in FCCVD |
| title_short | Study of surface defects and crystallinity of MWCNTs growth in FCCVD |
| title_sort | study of surface defects and crystallinity of mwcnts growth in fccvd |
| topic | ethylene fccvd ferrocene mwcnts tga thermogram |
| url | https://doi.org/10.1515/secm-2014-0253 |
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