Raman spectroscopic investigation of gas interactions with an aligned multiwalled carbon nanotube membrane

Christopher Matranga, Bradley Bockrath, Nitin Chopra, Bruce J. Hinds, Rodney Andrews

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Raman spectroscopy has been used to investigate ethane, propane, and SF 6 interactions with an aligned multiwalled carbon nanotube (MWNT) membrane. Pressures of 7.5-9.3 atm and temperatures of 293-333 K were examined for propane and SF 6, whereas slightly lower temperatures (263-293 K) and pressures (6.7-7.5 atm) were used for ethane. Red-shifting and broadening is seen for the C-C stretching vibrations of the two hydrocarbons, as well as for the Aig symmetric vibration (v 1) of SF 6. These spectral features indicate that the interaction between the gas and the nanotube membrane is capable of perturbing molecular vibrations and creating red-shifted features. Control experiments done on polycrystalline graphite and a polystyrene blank indicate that this spectral behavior is unique to gases interacting with the nanotubes in the membrane.

Original languageEnglish
Pages (from-to)1235-1240
Number of pages6
JournalLangmuir
Volume22
Issue number3
DOIs
StatePublished - Jan 31 2006

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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