S. Akyuz et al., FT-IR and FT-Raman spectroscopic investigations of adsorption of 2,2 '-biquinoline by smectite group clay minerals from Anatolia, VIB SPECTR, 22(1-2), 2000, pp. 11-17
The sorption of 2,2'-biquinoline onto natural and ion-exchanged montmorillo
nite (Fe-, Co- or Cu-montmorillonite) and saponite from Anatolia have been
investigated using FT-IR and FT-Raman Spectrometry. The intercalation of 2,
2'-biquinoline within natural and ion-exchanged montmorillonite and saponit
e has been shown by X-ray diffraction to increase the interlayer spacing, T
he difference of basal spacing of air-dried clays and biquinoline treated o
nes shows monolayer arrangement. Raman spectroscopy was particularly useful
for investigation of clay-organic interaction. Vibrational spectroscopy in
dicates that intercalated 2,2'-biquinoline molecules are coordinated to exc
hangeable cations (directly and indirectly through water bridges) and/or Le
wis acid sites or as bidentate ligand. (C) 2000 Elsevier Science B.V. All r
ights reserved.