Raman Spectroscopic Investigation of Gas Interactions with an Aligned Multiwalled Carbon Nanotube Membrane
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- 作者：Christopher Matranga ; Bradley Bockrath ; Nitin Chopra ; Bruce J. Hinds ; and Rodney Andrews
- 刊名：Langmuir
- 出版年：2006
- 出版时间：January 31, 2006
- 年：2006
- 卷：22
- 期：3
- 页码：1235 - 1240
- 全文大小：306K
- 年卷期：v.22,no.3(January 31, 2006)
- ISSN：1520-5827
文摘
Raman spectroscopy has been used to investigate ethane, propane, and SF6 interactions with an aligned multiwalledcarbon nanotube (MWNT) membrane. Pressures of 7.5-9.3 atm and temperatures of 293-333 K were examined forpropane and SF6, 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 theA1g symmetric vibration (
1) of SF6. These spectral features indicate that the interaction between the gas and thenanotube membrane is capable of perturbing molecular vibrations and creating red-shifted features. Control experimentsdone on polycrystalline graphite and a polystyrene blank indicate that this spectral behavior is unique to gases interactingwith the nanotubes in the membrane.
1) of SF6. These spectral features indicate that the interaction between the gas and thenanotube membrane is capable of perturbing molecular vibrations and creating red-shifted features. Control experimentsdone on polycrystalline graphite and a polystyrene blank indicate that this spectral behavior is unique to gases interactingwith the nanotubes in the membrane.