Gas-solid interactions in the hydrogen/single-walled carbon nanotube system

Masashi Shiraishi, Taishi Takenobu, Masafumi Ata

Research output: Contribution to journalArticle

102 Citations (Scopus)

Abstract

Gas-solid interactions between hydrogen and single-walled carbon nanotubes (SWNTs) were investigated using highly purified SWNTs. The activation energy of hydrogen desorption, measured to be 0.21 eV, indicates that hydrogen is physisorbed in the pores and that inter-tube pores have an adsorption potential of about -0.21 eV, which induces hydrogen physisorption at ambient temperature. The total amount of adsorbed hydrogen, about 0.3 wt% at 9 MPa, shows that 38% of the inter-tube sites are occupied. These .ndings are interpreted in terms of the chemical potential of hydrogen and the adsorption potential of the inter-tube pores.

Original languageEnglish
Pages (from-to)633-636
Number of pages4
JournalChemical Physics Letters
Volume367
Issue number5-6
DOIs
Publication statusPublished - 2003 Jan 10
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

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