X-ray absorption spectroscopy study of the hydrogen bond network in the bulk water of aqueous solutions

Lars Åke Näslund, David C. Edwards, Philippe Wernet, Uwe Bergmann, Hirohito Ogasawara, Lars G.M. Pettersson, Satish Chandra Babu Myneni, Anders Nilsson

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Abstract

We utilized X-ray absorption spectroscopy (XAS) and X-ray Raman scattering (XRS) in order to study the ion solvation effect on the bulk hydrogen bonding structure of water. The fine structures in the X-ray absorption spectra are sensitive to the local environment of the probed water molecule related to the hydrogen bond length and angles. By varying the concentration of ions, we can distinguish between contributions from water in the bulk and in the first solvation sphere. We show that the hydrogen bond network in bulk water, in terms of forming and breaking hydrogen bonds as detected by XAS/XRS, remains unchanged, and only the water molecules in the close vicinity to the ions are affected.

Original languageEnglish (US)
Pages (from-to)5995-6002
Number of pages8
JournalJournal of Physical Chemistry A
Volume109
Issue number27
DOIs
StatePublished - Jul 14 2005

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry

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    Näslund, L. Å., Edwards, D. C., Wernet, P., Bergmann, U., Ogasawara, H., Pettersson, L. G. M., Myneni, S. C. B., & Nilsson, A. (2005). X-ray absorption spectroscopy study of the hydrogen bond network in the bulk water of aqueous solutions. Journal of Physical Chemistry A, 109(27), 5995-6002. https://doi.org/10.1021/jp050413s