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n-Heptyl xanthate adsorption on a ZnS layer synthesized on germanium: an in situ attenuated total reflection IR study
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0001-9794-8305
2005 (English)In: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 286, no 1, p. 1-6Article in journal (Refereed) Published
Abstract [en]

Adsorption of n-heptyl xanthate on synthesized zinc sulfide was followed in situ by monitoring the methylene absorption band at 2925 cm-1. The zinc sulfide surface used in the adsorption experiments was synthesized on a germanium internal reflection element using the chemical bath deposition method. Characterization of the adsorbent surface was performed by X-ray photoelectron spectroscopy. The time needed to reach adsorption equilibrium varied with the initial concentration of the aqueous potassium heptyl xanthate solution. The amount of adsorbed xanthate ions increased with the concentration of the solution within the range studied (10 μM-50 mM). The experimental data are reasonably well described by the Langmuir adsorption isotherm. Polarized infrared attenuated total reflection (ATR) was used to determine the average orientation of the heptyl chains by measuring the absorbance of the infrared beam polarized perpendicularly and parallely to the plane of incidence. Measured absorbances were corrected for contribution from heptyl xanthate in bulk solution.

Place, publisher, year, edition, pages
2005. Vol. 286, no 1, p. 1-6
National Category
Metallurgy and Metallic Materials Physical Chemistry
Research subject
Process Metallurgy; Chemistry of Interfaces
Identifiers
URN: urn:nbn:se:ltu:diva-10633DOI: 10.1016/j.jcis.2005.01.022ISI: 000228935700001Scopus ID: 2-s2.0-17644386184Local ID: 97713540-e2ad-11db-b078-000ea68e967bOAI: oai:DiVA.org:ltu-10633DiVA, id: diva2:983578
Note
Validerad; 2005; 20070404 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Fredriksson, AndreasLidström-Larsson, MargaretaHolmgren, Allan

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