The adsorption behavior of octafluoropropane at the water/gas interface

We studied the adsorption behavior of the gas octafluoropropane at the water/gas interface as a function of different pressures. In a custom-made measurement cell, the gas pressure was varied in a range between 1 bar and close to the condensation pressure of octafluoropropane. The electron density p...

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Bibliographic Details
Published in:Journal of applied physics 2014-12, Vol.116 (22)
Main Authors: Giebel, Friederike, Paulus, Michael, Nase, Julia, Bieder, Steffen, Kiesel, Irena, Tolan, Metin
Format: Article
Language:English
Subjects:
ADSORPTION
Applied physics
Bulk density
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
ELECTRON DENSITY
Electron density profiles
Electrons
Gas pressure
INTERFACES
LAYERS
Plasma
SURFACES
THICKNESS
WATER
WATER GAS
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Summary:We studied the adsorption behavior of the gas octafluoropropane at the water/gas interface as a function of different pressures. In a custom-made measurement cell, the gas pressure was varied in a range between 1 bar and close to the condensation pressure of octafluoropropane. The electron density profiles of the adsorption layers show that the layer thickness increases with pressure. The evolution of the layer electron density indicates that the bulk electron density is reached if a layer consisting of more than one monolayer of octafluoropropane is adsorbed on the water surface.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4902961