FTIR internal reflection spectroscopy studies of the effect of pH on adsorption of oleate/oleic acid at the surface of a TiO < inf> 2 thin film deposited on a Ge single crystal
Document Type
Article
Publication Date
1-1-1998
Abstract
The adsorption of oleate/oleic acid from aqueous solutions at the surface of titanium dioxide was examined by Fourier transform infrared (FT-IR) spectroscopy using a germanium internal reflection element coated with a thin film of TiO 2 . This thin film, with a thickness of 100-200 Å, was deposited on the surface of a germanium single crystal by rf/dc magnetron reactive sputtering. It was found that significant adsorption of oleate/oleic acid from a 0.03 mM aqueous solution occurs at neutral and close-to-neutral pH, from about pH = 4.5 to pH = 8.5. The surface density vs. pH relationship obtained in this study is consistent with literature reports on the effect of pH on flotation recovery of rutile from oleic acid solutions. © 1998 Elsevier Science B.V.
Publication Title
Applied Surface Science
Recommended Citation
Drelich, J.,
Lu, Y.,
Chen, L.,
Miller, J.,
&
Guruswamy, S.
(1998).
FTIR internal reflection spectroscopy studies of the effect of pH on adsorption of oleate/oleic acid at the surface of a TiO < inf> 2 thin film deposited on a Ge single crystal.
Applied Surface Science,
125(2), 236-244.
http://doi.org/10.1016/S0169-4332(97)00416-9
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/7449
