Your browser has javascript turned off or blocked. This will lead to some parts of our website to not work properly or at all. Turn on javascript for best performance.

The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Per Persson. Photo.

Per Persson

Director

Per Persson. Photo.

Vibration spectroscopy study of phenylphosphonate at the water-aluminum (hydr)oxide interface

Author

  • Per Persson
  • E. Laiti
  • L. O. Ohman

Summary, in English

Two previously published surface complexation models of phenylphosphonate on aged gamma-Al2O3 and boehmite (gamma-AlOOH), respectively, have been examined by means of FTIR and FT-Raman spectroscopy. The spectral features of adsorbed phenylphosphonate were studied as a function of pH and total phenylphosphonate concentration. No evidence for a phase transformation into a three-dimensional aluminum phenylphosphonate phase was found. This suggested that phenylphosphonate is sorbed as surface complexes under the conditions used in this study. Both the infrared and the Raman data showed that the surface-bound phenylphosphonate ions undergo protonation reactions as pH is varied. These results together with the fact that the ligand has only two donor atoms for complexation and protonation led to the conclusion that a monodentate coordination to the surface is most likely in both systems. Overall, the spectroscopic results were in good qualitative agreement with the thermodynamic surface complexation models. (C) 1997 Academic Press.

Publishing year

1997

Language

English

Pages

341-349

Publication/Series

Journal of Colloid and Interface Science

Volume

190

Document type

Journal article

Publisher

Elsevier

Topic

  • Earth and Related Environmental Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1095-7103