A step toward production of smaller diameter single wall carbon nanotubes
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2003 |
| Outros Autores: | , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Materials research (São Carlos. Online) |
| Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000100003 |
Resumo: | Single-wall carbon nanotubes were produced with, either, a bimetallic or a mixture of three catalysts. Raman scattering and high resolution transmission electron microscopy were used as characterization tools. The mixture LiNi0.5Co0.5O2 leaded to a sample relatively free from impurities with long bundles, each containing a few tubes. A narrow distribution of diameters for the sample produced with this mixture was evidenced by Raman scattering experiences. The mean tube diameter was found to be smaller than those measured for the nanotubes obtained with the bimetallic catalysts, Fe/Ni and Ni/Co. Possible chiralities were calculated for the semiconductor nanotubes formed. Assignments of the Raman radial breathing mode frequencies to the calculated structures are presented. |
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A step toward production of smaller diameter single wall carbon nanotubessingle-wall carbon nanotubesraman scatteringhigh resolution transmission electron microscopySingle-wall carbon nanotubes were produced with, either, a bimetallic or a mixture of three catalysts. Raman scattering and high resolution transmission electron microscopy were used as characterization tools. The mixture LiNi0.5Co0.5O2 leaded to a sample relatively free from impurities with long bundles, each containing a few tubes. A narrow distribution of diameters for the sample produced with this mixture was evidenced by Raman scattering experiences. The mean tube diameter was found to be smaller than those measured for the nanotubes obtained with the bimetallic catalysts, Fe/Ni and Ni/Co. Possible chiralities were calculated for the semiconductor nanotubes formed. Assignments of the Raman radial breathing mode frequencies to the calculated structures are presented.ABM, ABC, ABPol2003-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000100003Materials Research v.6 n.1 2003reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392003000100003info:eu-repo/semantics/openAccessLemos,V.Silva,D.Luengo,C.A.Huber,J.G.Rosolen,J.M.eng2003-03-25T00:00:00Zoai:scielo:S1516-14392003000100003Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2003-03-25T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
| dc.title.none.fl_str_mv |
A step toward production of smaller diameter single wall carbon nanotubes |
| title |
A step toward production of smaller diameter single wall carbon nanotubes |
| spellingShingle |
A step toward production of smaller diameter single wall carbon nanotubes Lemos,V. single-wall carbon nanotubes raman scattering high resolution transmission electron microscopy |
| title_short |
A step toward production of smaller diameter single wall carbon nanotubes |
| title_full |
A step toward production of smaller diameter single wall carbon nanotubes |
| title_fullStr |
A step toward production of smaller diameter single wall carbon nanotubes |
| title_full_unstemmed |
A step toward production of smaller diameter single wall carbon nanotubes |
| title_sort |
A step toward production of smaller diameter single wall carbon nanotubes |
| author |
Lemos,V. |
| author_facet |
Lemos,V. Silva,D. Luengo,C.A. Huber,J.G. Rosolen,J.M. |
| author_role |
author |
| author2 |
Silva,D. Luengo,C.A. Huber,J.G. Rosolen,J.M. |
| author2_role |
author author author author |
| dc.contributor.author.fl_str_mv |
Lemos,V. Silva,D. Luengo,C.A. Huber,J.G. Rosolen,J.M. |
| dc.subject.por.fl_str_mv |
single-wall carbon nanotubes raman scattering high resolution transmission electron microscopy |
| topic |
single-wall carbon nanotubes raman scattering high resolution transmission electron microscopy |
| description |
Single-wall carbon nanotubes were produced with, either, a bimetallic or a mixture of three catalysts. Raman scattering and high resolution transmission electron microscopy were used as characterization tools. The mixture LiNi0.5Co0.5O2 leaded to a sample relatively free from impurities with long bundles, each containing a few tubes. A narrow distribution of diameters for the sample produced with this mixture was evidenced by Raman scattering experiences. The mean tube diameter was found to be smaller than those measured for the nanotubes obtained with the bimetallic catalysts, Fe/Ni and Ni/Co. Possible chiralities were calculated for the semiconductor nanotubes formed. Assignments of the Raman radial breathing mode frequencies to the calculated structures are presented. |
| publishDate |
2003 |
| dc.date.none.fl_str_mv |
2003-01-01 |
| dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
| dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
| format |
article |
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publishedVersion |
| dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000100003 |
| url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000100003 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
10.1590/S1516-14392003000100003 |
| dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
text/html |
| dc.publisher.none.fl_str_mv |
ABM, ABC, ABPol |
| publisher.none.fl_str_mv |
ABM, ABC, ABPol |
| dc.source.none.fl_str_mv |
Materials Research v.6 n.1 2003 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
| instname_str |
Universidade Federal de São Carlos (UFSCAR) |
| instacron_str |
ABM ABC ABPOL |
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ABM ABC ABPOL |
| reponame_str |
Materials research (São Carlos. Online) |
| collection |
Materials research (São Carlos. Online) |
| repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
| repository.mail.fl_str_mv |
dedz@power.ufscar.br |
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1754212657280319488 |