X-ray absorption spectroscopy measurements of liquid water

Naslund L., Luning J., Ufuktepe Y., Ogasawara H., Wernet P., Bergmann U., ...More

JOURNAL OF PHYSICAL CHEMISTRY B, vol.109, no.28, pp.13835-13839, 2005 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 109 Issue: 28
  • Publication Date: 2005
  • Doi Number: 10.1021/jp052046q
  • Journal Name: JOURNAL OF PHYSICAL CHEMISTRY B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.13835-13839
  • Çukurova University Affiliated: Yes

Abstract

Recent studies, based on X-ray absorption spectroscopy (XAS) and X-ray Raman scattering (XRS), have shown that the hydrogen bond network in liquid water consists mainly of water molecules with only two strong hydrogen bonds. Since this result is controversial, it is important to demonstrate the reliability of the experimental data, which is the purpose of this paper. Here we compare X-ray absorption spectra of liquid water recorded with five very different techniques sensitive to the local environment of the absorbing molecule. Overall, the spectra obtained with photon detection show a very close similarity and even the observable minor differences can be understood. The comparison demonstrates that XAS and XRS can indeed be applied reliably to study the local bonding of the water molecule and thus to reveal the hydrogen bond situation in bulk water.