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Solvation at nanoscale: alkali halides in water clusters
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2013 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 138, no 4, 044301- p.Article in journal (Refereed) Published
Abstract [en]

The solvation of alkali-halides in water clusters at nanoscale is studied by photoelectron spectroscopy using synchrotron radiation. The Na 2p, K 3p, Cl 2p, Br 3d, and I 4d core level binding energies have been measured for salt-containing water clusters. The results have been compared to those of alkali halide clusters and the dilute aqueous salt solutions. It is found that the alkali halides dissolve in small water clusters as ions.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2013. Vol. 138, no 4, 044301- p.
National Category
Natural Sciences Atom and Molecular Physics and Optics
Research subject
Physics with spec. in Atomic, Molecular and Condensed Matter Physics
URN: urn:nbn:se:uu:diva-196354DOI: 10.1063/1.4775586ISI: 000314725900018OAI: oai:DiVA.org:uu-196354DiVA: diva2:609972
Olle Björneholm
Swedish Research Council
Available from: 2013-03-08 Created: 2013-03-08 Last updated: 2014-01-22Bibliographically approved
In thesis
1. Multicomponent Clusters/Nanoparticles: An Investigation of Electronic and Geometric Properties by Photoelectron Spectroscopy
Open this publication in new window or tab >>Multicomponent Clusters/Nanoparticles: An Investigation of Electronic and Geometric Properties by Photoelectron Spectroscopy
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Clusters/nanoparticles are aggregates of a “small” number of building blocks, atoms or molecules, ranging from two up to millions of atoms. Two main groups of clusters have been studied using photoelectron spectroscopy based on synchrotron radiation. They are dry/wet alkali-halide clusters, including pure water clusters, and metal-based nanoparticles.

For the dry alkali halide clusters, analysis of the data and theoretical modeling has allowed us insights into the local electronic properties at nanoscale: a change of polarizability of ions in the alkali-halide clusters due to the varying environment has been suggested. The study of the wet salt clusters shows that the alkali-halides are already solvated at the nanoscale reached by water clusters doped with salt vapor.

The photoelectron angular distribution of water cluster shows lower anisotropy parameters as compared to the separate monomers. A model based on intracluster scattering has been built to partly explain the reduction.

In the last part of the thesis, metal-based multi-component nanoparticles have been produced by self-assembly processes using reactive magnetron sputtering. Depending on the specific metal element, oxidation processes have been applied before or after the aggregation. Clearly radial distributions such as core-shell and “sandwich-like” structures have unambiguously determined by photoelectron spectroscopy.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2013. 92 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1065
Clusters, Nanoparticles, Alloy, Atmospheric chemistry, Alkali halide, Transition metals, X-ray Photoelectron spectroscopy, Polarizability, Core-shell, Sandwich structure, MAX-lab, BESSY II
National Category
Condensed Matter Physics Atom and Molecular Physics and Optics
urn:nbn:se:uu:diva-205651 (URN)978-91-554-8730-0 (ISBN)
Public defence
2013-10-03, Room 80101, Lägerhyddsvägen 1, Uppsala, 10:00 (English)
Available from: 2013-09-12 Created: 2013-08-21 Last updated: 2014-01-22

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Publisher's full texthttp://jcp.aip.org/resource/1/jcpsa6/v138/i4/p044301_s1

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