Raman spectroscopy revealing noble gas adsorption on single-walled carbon nanotube bundles

Renato Cunha, Ricardo Paupitz, Kichul Yoon, Adri C.T. Van Duin, Ana Laura Elías, Victor Carozo, Archi Dasgupta, Kazunori Fujisawa, Néstor Perea Lopez, Paulo T. Araujo, Mauricio Terrones

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The interaction of the noble atoms (Ar and Xe) with single-walled carbon nanotube (SWCNT) bundles are investigated using Raman spectroscopy in conjunction with computational modeling known as ReaxFF force field. SWCNT bundles were deposited on transmission electron microscopy (TEM) grids, and different noble gases were adsorbed onto the nanotubes at 20 K. Raman spectra acquired show significant frequency blueshifts of the radial breathing mode (RBM), G- and G′(or 2D)-bands due to gas solidification within the external groove sites (free spaces between the tubes in the bundle) and external surfaces of the bundles. This solid shell formed by the adsorbed gases contributes with a hydrostatic pressure to the system. We show from Raman measurements that the frequencies found after gas adsorption exhibit almost the same shifts indicating that the interactions between SWCNTs bundles and the gases (Ar or Xe) are nearly identical.

Original languageEnglish (US)
Pages (from-to)312-319
Number of pages8
JournalCarbon
Volume127
DOIs
StatePublished - Feb 2018

Fingerprint

Noble Gases
Gas adsorption
Single-walled carbon nanotubes (SWCN)
Inert gases
Raman spectroscopy
Gases
Hydrostatic pressure
Nanotubes
Solidification
Raman scattering
Transmission electron microscopy
Atoms

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

Cunha, Renato ; Paupitz, Ricardo ; Yoon, Kichul ; Van Duin, Adri C.T. ; Elías, Ana Laura ; Carozo, Victor ; Dasgupta, Archi ; Fujisawa, Kazunori ; Lopez, Néstor Perea ; Araujo, Paulo T. ; Terrones, Mauricio. / Raman spectroscopy revealing noble gas adsorption on single-walled carbon nanotube bundles. In: Carbon. 2018 ; Vol. 127. pp. 312-319.
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abstract = "The interaction of the noble atoms (Ar and Xe) with single-walled carbon nanotube (SWCNT) bundles are investigated using Raman spectroscopy in conjunction with computational modeling known as ReaxFF force field. SWCNT bundles were deposited on transmission electron microscopy (TEM) grids, and different noble gases were adsorbed onto the nanotubes at 20 K. Raman spectra acquired show significant frequency blueshifts of the radial breathing mode (RBM), G- and G′(or 2D)-bands due to gas solidification within the external groove sites (free spaces between the tubes in the bundle) and external surfaces of the bundles. This solid shell formed by the adsorbed gases contributes with a hydrostatic pressure to the system. We show from Raman measurements that the frequencies found after gas adsorption exhibit almost the same shifts indicating that the interactions between SWCNTs bundles and the gases (Ar or Xe) are nearly identical.",
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Raman spectroscopy revealing noble gas adsorption on single-walled carbon nanotube bundles. / Cunha, Renato; Paupitz, Ricardo; Yoon, Kichul; Van Duin, Adri C.T.; Elías, Ana Laura; Carozo, Victor; Dasgupta, Archi; Fujisawa, Kazunori; Lopez, Néstor Perea; Araujo, Paulo T.; Terrones, Mauricio.

In: Carbon, Vol. 127, 02.2018, p. 312-319.

Research output: Contribution to journalArticle

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AU - Cunha, Renato

AU - Paupitz, Ricardo

AU - Yoon, Kichul

AU - Van Duin, Adri C.T.

AU - Elías, Ana Laura

AU - Carozo, Victor

AU - Dasgupta, Archi

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AU - Araujo, Paulo T.

AU - Terrones, Mauricio

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