Investigation of the pore structure of as-prepared and purified HiPco single-walled carbon nanotubes by N2/Ar adsorption-implication for H2 storage

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DOIResolve DOI: http://doi.org/10.1021/nl010096a
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TypeArticle
Journal titleNano letters
ISSN1530-6984
Volume2
Issue4
Pages343346; # of pages: 4
AbstractOpen single-walled carbon nanotubes (SWNTs) are attractive as potential storage media for hydrogen gas. The present paper investigates the micropore structure of HiPco SWNTs samples, as studied by nitrogen and argon adsorption technique at low pressures. The proportion of open SWNT is estimated with the Horvath-Kawazoe method. The results show that as-prepared samples may contain as much as 40% open SWNTs, whereas the oxidative purification process reduces this amount significantly. X-ray diffraction and Raman spectroscopy show that the Horvath-Kawazoe method is reliable for estimating the diameter of open SWNTs. In addition, the Horvath-Kawazoe method appears to be sensitive to species adsorbed in the outer grooves.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
Identifier19345410
NPARC number12327471
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Record identifier30c0fadf-3316-43f3-a99e-1ba6336ba50f
Record created2009-09-10
Record modified2016-05-09
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