Nitrogen physisorption and site blocking on single-walled carbon nanotubes

S. K. Lee; S. Iwata; S. Ogura; Y. Sato; K. Tohji; K. Fukutani

doi:10.1016/j.susc.2011.10.009

Nitrogen physisorption and site blocking on single-walled carbon nanotubes

S. K. Lee, S. Iwata, S. Ogura, Y. Sato, K. Tohji, K. Fukutani

ENV - Environmental Studies for Advanced Society

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

N ₂ physisorption on Single-Walled Carbon Nanotubes (SWCNTs) was investigated by cryogenic thermal-desorption spectroscopy (cryo-TDS). TDS spectra revealed a desorption peak at 48 K (α) for as-purified SWCNTs and an additional desorption peak at 73 K (β) for air-oxidized SWCNTs. When N ₂ and H ₂ were coadsorbed on SWCNTs, H ₂ adsorption was blocked by the N ₂ preadsorption. By comparing the TDS data with and without the N ₂ preadsorption, the α and β peaks were attributed to N ₂ adsorbed on the groove site and inside of SWCNTs, respectively.

Original language	English
Pages (from-to)	293-296
Number of pages	4
Journal	Surface Science
Volume	606
Issue number	3-4
DOIs	https://doi.org/10.1016/j.susc.2011.10.009
Publication status	Published - 2012 Feb

Keywords

Gas adsorption
Hydrogen
Nitrogen
Single-walled carbon nanotube

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.susc.2011.10.009

Cite this

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title = "Nitrogen physisorption and site blocking on single-walled carbon nanotubes",

abstract = "N 2 physisorption on Single-Walled Carbon Nanotubes (SWCNTs) was investigated by cryogenic thermal-desorption spectroscopy (cryo-TDS). TDS spectra revealed a desorption peak at 48 K (α) for as-purified SWCNTs and an additional desorption peak at 73 K (β) for air-oxidized SWCNTs. When N 2 and H 2 were coadsorbed on SWCNTs, H 2 adsorption was blocked by the N 2 preadsorption. By comparing the TDS data with and without the N 2 preadsorption, the α and β peaks were attributed to N 2 adsorbed on the groove site and inside of SWCNTs, respectively.",

keywords = "Gas adsorption, Hydrogen, Nitrogen, Single-walled carbon nanotube",

author = "Lee, {S. K.} and S. Iwata and S. Ogura and Y. Sato and K. Tohji and K. Fukutani",

note = "Funding Information: This work was supported by a Grant-in-Aid for Scientific Research from The Ministry of Education, Culture, Sports, Science and Technology of Japan .",

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journal = "Surface Science",

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TY - JOUR

T1 - Nitrogen physisorption and site blocking on single-walled carbon nanotubes

AU - Lee, S. K.

AU - Iwata, S.

AU - Ogura, S.

AU - Sato, Y.

AU - Tohji, K.

AU - Fukutani, K.

N1 - Funding Information: This work was supported by a Grant-in-Aid for Scientific Research from The Ministry of Education, Culture, Sports, Science and Technology of Japan .

PY - 2012/2

Y1 - 2012/2

N2 - N 2 physisorption on Single-Walled Carbon Nanotubes (SWCNTs) was investigated by cryogenic thermal-desorption spectroscopy (cryo-TDS). TDS spectra revealed a desorption peak at 48 K (α) for as-purified SWCNTs and an additional desorption peak at 73 K (β) for air-oxidized SWCNTs. When N 2 and H 2 were coadsorbed on SWCNTs, H 2 adsorption was blocked by the N 2 preadsorption. By comparing the TDS data with and without the N 2 preadsorption, the α and β peaks were attributed to N 2 adsorbed on the groove site and inside of SWCNTs, respectively.

AB - N 2 physisorption on Single-Walled Carbon Nanotubes (SWCNTs) was investigated by cryogenic thermal-desorption spectroscopy (cryo-TDS). TDS spectra revealed a desorption peak at 48 K (α) for as-purified SWCNTs and an additional desorption peak at 73 K (β) for air-oxidized SWCNTs. When N 2 and H 2 were coadsorbed on SWCNTs, H 2 adsorption was blocked by the N 2 preadsorption. By comparing the TDS data with and without the N 2 preadsorption, the α and β peaks were attributed to N 2 adsorbed on the groove site and inside of SWCNTs, respectively.

KW - Gas adsorption

KW - Hydrogen

KW - Nitrogen

KW - Single-walled carbon nanotube

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DO - 10.1016/j.susc.2011.10.009

M3 - Article

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VL - 606

SP - 293

EP - 296

JO - Surface Science

JF - Surface Science

IS - 3-4

ER -

Nitrogen physisorption and site blocking on single-walled carbon nanotubes

Abstract

Keywords

ASJC Scopus subject areas

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