Heterogeneity analysis of single-walled carbon nanotubes from the adsorption equilibria of nitrogen and benzene

Wang Geun Shim; Hyun Chul Kang; Chan Kim; Jae Wook Lee; Sang Chai Kim; Chul Jin Lee; Hee Moon

doi:10.1166/jnn.2006.061

Heterogeneity analysis of single-walled carbon nanotubes from the adsorption equilibria of nitrogen and benzene

Wang Geun Shim, Hyun Chul Kang, Chan Kim, Jae Wook Lee, Sang Chai Kim, Chul Jin Lee, Hee Moon

School of Electrical Engineering

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

6 Citations (Scopus)

Abstract

Nitrogen adsorption/desorption isotherms and gravimetric methods were employed to examine the structural and adsorption properties of selected adsorbent. The equilibrium data of benzene were also obtained at three different temperatures (303.15, 313.15, and 323.15 K) with pressures up to 7 kPa. The results of nitrogen and benzene sorption isotherm revealed that SWCNTs exhibit type II with the features of type I. The Toth and UNILAN models were found to provide a reasonable correlation between the adsorption isotherm data. In addition, the adsorption second virial coefficient and the isosteric heat of adsorption were determined by using these isotherm models. The isosteric heat of adsorption and adsorption energy distribution indicated that SWCNTs have energetically and structurally heterogeneous surfaces.

Original language	English
Pages (from-to)	3583-3588
Number of pages	6
Journal	Journal of Nanoscience and Nanotechnology
Volume	6
Issue number	11
DOIs	https://doi.org/10.1166/jnn.2006.061
Publication status	Published - 2006 Nov

Keywords

Adsorption
Heterogeneity
Single-walled carbon nanotubes (SWCNTs)

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Biomedical Engineering
Materials Science(all)
Condensed Matter Physics

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10.1166/jnn.2006.061

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abstract = "Nitrogen adsorption/desorption isotherms and gravimetric methods were employed to examine the structural and adsorption properties of selected adsorbent. The equilibrium data of benzene were also obtained at three different temperatures (303.15, 313.15, and 323.15 K) with pressures up to 7 kPa. The results of nitrogen and benzene sorption isotherm revealed that SWCNTs exhibit type II with the features of type I. The Toth and UNILAN models were found to provide a reasonable correlation between the adsorption isotherm data. In addition, the adsorption second virial coefficient and the isosteric heat of adsorption were determined by using these isotherm models. The isosteric heat of adsorption and adsorption energy distribution indicated that SWCNTs have energetically and structurally heterogeneous surfaces.",

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AU - Shim, Wang Geun

AU - Kang, Hyun Chul

AU - Kim, Chan

AU - Lee, Jae Wook

AU - Kim, Sang Chai

AU - Lee, Chul Jin

AU - Moon, Hee

PY - 2006/11

Y1 - 2006/11

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AB - Nitrogen adsorption/desorption isotherms and gravimetric methods were employed to examine the structural and adsorption properties of selected adsorbent. The equilibrium data of benzene were also obtained at three different temperatures (303.15, 313.15, and 323.15 K) with pressures up to 7 kPa. The results of nitrogen and benzene sorption isotherm revealed that SWCNTs exhibit type II with the features of type I. The Toth and UNILAN models were found to provide a reasonable correlation between the adsorption isotherm data. In addition, the adsorption second virial coefficient and the isosteric heat of adsorption were determined by using these isotherm models. The isosteric heat of adsorption and adsorption energy distribution indicated that SWCNTs have energetically and structurally heterogeneous surfaces.

KW - Adsorption

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KW - Single-walled carbon nanotubes (SWCNTs)

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Heterogeneity analysis of single-walled carbon nanotubes from the adsorption equilibria of nitrogen and benzene

Abstract

Keywords

ASJC Scopus subject areas

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