High-Purity Diamagnetic Single-Wall Carbon Nanotube Buckypaper

We describe a novel purification process for single-wall carbon nanotube (SWNT) materials that removes non-nanotube carbon and reduces ferromagnetic impurities to levels at which native SWNT magnetic properties predominate. Ferromagnetism is reduced from 1.04 to less than 0.013 emu/g by magnetic gra...

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Bibliographic Details
Published inChemistry of materials Vol. 19; no. 12; pp. 2982 - 2986
Main Authors Kim, Younghyun, Torrens, Omar N, Kikkawa, J. M, Abou-Hamad, Edy, Goze-Bac, Christophe, Luzzi, David E
Format Journal Article
LanguageEnglish
Published American Chemical Society 12.06.2007
Subjects
Condensed Matter
Materials Science
Physics
FULLERENE PEAPODS
NMR
BUNDLES
SPECTROSCOPY
PARTICLES
PURIFICATION
NANOSTRUCTURES
MAGNETIC-PROPERTIES
CATALYST
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Summary:We describe a novel purification process for single-wall carbon nanotube (SWNT) materials that removes non-nanotube carbon and reduces ferromagnetic impurities to levels at which native SWNT magnetic properties predominate. Ferromagnetism is reduced from 1.04 to less than 0.013 emu/g by magnetic gradient filtration. This procedure creates samples of sufficient quality for spectroscopies such as nuclear magnetic resonance (NMR). The overall cleanliness and purity of the material is confirmed through NIR absorption spectroscopy, X-ray diffraction, C60 filling experiments with yields exceeding 90%, and high-resolution 13C NMR.
Bibliography:istex:9E468684970D24337E6B460E999AA9EB080DFF70
ark:/67375/TPS-0XRW5B10-X
ISSN:0897-4756
1520-5002
DOI:10.1021/cm063006h