The influence of the carbon surface chemical composition on Dubinin-Astakhov equation parameters calculated from SF6 adsorption data: grand canonical Monte Carlo simulation
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Authors
Furmaniak, Sylwester
Terzyk, A.
Gauden, P.
Kowalczyk, Piotr
Harris, P.
Date
2011Type
Journal Article
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Furmaniak, Sylwester and Terzyk, Artur P. and Gauden, Piotr A. and Kowalczyk, Piotr and Harris, Peter J.F. 2011. The influence of the carbon surface chemical composition on Dubinin-Astakhov equation parameters calculated from SF6 adsorption data: grand canonical Monte Carlo simulation. Journal of Physics: Condensed Matter. 23: pp. 395005.
Source Title
Journal of Physics: Condensed Matter
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School
Department of Applied Chemistry
Remarks
Copyright © 2011 IOP Institute of Physics
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Abstract
Using grand canonical Monte Carlo simulation we show, for the first time, the influence of the carbon porosity and surface oxidation on the parameters of the Dubinin-Astakhov (DA) adsorption isotherm equation. We conclude that upon carbon surface oxidation, the adsorption decreases for all carbons studied. Moreover, the parameters of the DA model depend on the number of surface oxygen groups. That is why in the case of carbons containing surface polar groups, SF6 adsorption isotherm data cannot be used for characterization of the porosity.
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