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

Persson, Per LU ; Laiti, E. and Ohman, L. O. (1997) In Journal of Colloid and Interface Science 190. p.341-349
Abstract
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... (More)
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. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Colloid and Interface Science
volume
190
pages
341 - 349
publisher
Elsevier
external identifiers
  • scopus:0031570696
ISSN
1095-7103
DOI
10.1006/jcis.1997.4883
language
English
LU publication?
no
id
221b9c83-d93c-4fa8-b22b-8fc68b47e319 (old id 4332655)
date added to LUP
2014-03-04 09:43:35
date last changed
2017-07-23 03:38:39
@article{221b9c83-d93c-4fa8-b22b-8fc68b47e319,
  abstract     = {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.},
  author       = {Persson, Per and Laiti, E. and Ohman, L. O.},
  issn         = {1095-7103},
  language     = {eng},
  pages        = {341--349},
  publisher    = {Elsevier},
  series       = {Journal of Colloid and Interface Science},
  title        = {Vibration spectroscopy study of phenylphosphonate at the water-aluminum (hydr)oxide interface},
  url          = {http://dx.doi.org/10.1006/jcis.1997.4883},
  volume       = {190},
  year         = {1997},
}