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Surface structure of cationic surfactant solutions investigated by angular resolved X‐ray photoelectron spectroscopy with calibrated transmission function
Chuangye Wang,Harald Morgner +1 more
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TLDR
In this article, the surface structure of cationic surfactant solutions by angular resolved X-ray photoelectron spectroscopy (ARXPS) after calibrating transmission function of the spectrometer was investigated.Abstract:
The main goal of the present work is to investigate the surface structure of cationic surfactant solutions by angular resolved X-ray photoelectron spectroscopy (ARXPS) after calibrating transmission function of the spectrometer. We have estimated the transmission function of the ARXPS spectrometer, and with it, we investigated solution of tetrabutylammonium iodide in a nonaqueous polar solvent. By genetic algorithm, the fractional concentration-depth profiles of constituents were reconstructed. These depth profiles evidence the enrichment of surfactant and the depletion of solvent in the surface regime and verify the separate distributions of oppositely charged surfactant ions. From those profiles we draw a conclusion that there is a preferred orientation for cation present at the surface, and the possibility for cation to take this orientation is related to its surface amount. Copyright © 2010 John Wiley & Sons, Ltd.read more
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Ion Scattering Studies of Molecular Structure at Liquid Surfaces with Applications in Industrial and Biological Systems
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Core level photoelectron spectroscopy of heterogeneous reactions at liquid–vapor interfaces: Current status, challenges, and prospects
TL;DR: X-ray photoelectron spectroscopy is an excellent method for the investigation of these interfaces due to its surface sensitivity, elemental and chemical specificity, and the possibility to obtain information on the depth distribution of solute and solvent species in the interfacial region as discussed by the authors.
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Thermodynamics and structure of liquid surfaces investigated directly with surface analytical tools
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Surfactant-promoted reactions of Cl2 and Br2 with Br- in glycerol.
TL;DR: In this paper, gas-liquid scattering experiments are used to explore reactions of gaseous Cl2 and Br2 with a 0.03 M solution of the surfactant tetrahexylammonium bromide (THABr) dissolved in glycerol.
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Surfactant-Promoted Reactions of Cl2 and Br2 with Br– in Glycerol B
TL;DR: The THA(+) ion appears to be a powerful interfacial catalyst for promoting reaction of Cl2 and Br2 with Br(-) and for ferrying the resultant ions into solution.
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