In situ Raman spectroscopy of aza-arenes adsorbed at the aqueous/silica interface

Robert A. Matzner, Roger C. Bales, Jeanne E Pemberton

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Raman spectroscopy is used to study the effect of pH on the solute/sorbent interactions and the chemical nature of the adsorbed species at the aqueous/silica interface for the aza-arenes acridine, quinoline, and pyridine. The neutral aza-arene is hydrogen-bonded to surface sites in aqueous media in which the pH is above the pKa of the compound. A protonated aza-arene/ClO4 ion pair interacts with surface sites in aqueous solutions in which the pH is below the pKa of the compound. These results may be useful in predicting the fate of these environmentally significant compounds in groundwater.

Original languageEnglish (US)
Pages (from-to)1043-1053
Number of pages11
JournalApplied Spectroscopy
Volume48
Issue number9
StatePublished - Sep 1994
Externally publishedYes

Fingerprint

Silicon Dioxide
Raman spectroscopy
Silica
silicon dioxide
Acridines
Sorbents
Pyridine
Groundwater
Hydrogen
sorbents
quinoline
Ions
ground water
pyridines
solutes
aqueous solutions
hydrogen
ions
interactions
pyridine

ASJC Scopus subject areas

  • Spectroscopy
  • Instrumentation

Cite this

In situ Raman spectroscopy of aza-arenes adsorbed at the aqueous/silica interface. / Matzner, Robert A.; Bales, Roger C.; Pemberton, Jeanne E.

In: Applied Spectroscopy, Vol. 48, No. 9, 09.1994, p. 1043-1053.

Research output: Contribution to journalArticle

Matzner, Robert A. ; Bales, Roger C. ; Pemberton, Jeanne E. / In situ Raman spectroscopy of aza-arenes adsorbed at the aqueous/silica interface. In: Applied Spectroscopy. 1994 ; Vol. 48, No. 9. pp. 1043-1053.
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