Abstract
An electrophoresis cell developed in our laboratory was utilized to determine the zeta potential at the SnO 2 (cassiterite)/aqueous solution (10 -3 mol kg -1 NaCl) interface over the temperature range from 25 to 260 °C. Experimental techniques and methods for the calculation of zeta potential at elevated temperature are described. From the obtained zeta potential data as a function of pH, the isoelectric points (IEPs) of SnO 2 were obtained for the first time. From these IEP values, the standard thermodynamic functions were calculated for the protonationdeprotonation equilibrium at the SnO 2 surface, using the 1-pK surface complexation model. It was found that the IEP values for SnO 2 decrease with increasing temperature, and this behavior is compared to the predicted values by the multisite complexation (MUSIC) model and other semitheoretical treatments, and were found to be in excellent agreement.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 8101-8110 |
| Number of pages | 10 |
| Journal | Langmuir |
| Volume | 25 |
| Issue number | 14 |
| DOIs | |
| State | Published - Jul 21 2009 |
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All Science Journal Classification (ASJC) codes
- Electrochemistry
- Condensed Matter Physics
- Surfaces and Interfaces
- Materials Science(all)
- Spectroscopy
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Electrophoretic study of the SnO 2/aqueous solution interface up to 260 °C. / Rodriguez-Santiago, Victor; Fedkin, Mark Valentinovich; Wesolowski, David J.; Rosenqvist, Jörgen; Lvov, Serguei.
In: Langmuir, Vol. 25, No. 14, 21.07.2009, p. 8101-8110.Research output: Contribution to journal › Article
TY - JOUR
T1 - Electrophoretic study of the SnO 2/aqueous solution interface up to 260 °C
AU - Rodriguez-Santiago, Victor
AU - Fedkin, Mark Valentinovich
AU - Wesolowski, David J.
AU - Rosenqvist, Jörgen
AU - Lvov, Serguei
PY - 2009/7/21
Y1 - 2009/7/21
N2 - An electrophoresis cell developed in our laboratory was utilized to determine the zeta potential at the SnO 2 (cassiterite)/aqueous solution (10 -3 mol kg -1 NaCl) interface over the temperature range from 25 to 260 °C. Experimental techniques and methods for the calculation of zeta potential at elevated temperature are described. From the obtained zeta potential data as a function of pH, the isoelectric points (IEPs) of SnO 2 were obtained for the first time. From these IEP values, the standard thermodynamic functions were calculated for the protonationdeprotonation equilibrium at the SnO 2 surface, using the 1-pK surface complexation model. It was found that the IEP values for SnO 2 decrease with increasing temperature, and this behavior is compared to the predicted values by the multisite complexation (MUSIC) model and other semitheoretical treatments, and were found to be in excellent agreement.
AB - An electrophoresis cell developed in our laboratory was utilized to determine the zeta potential at the SnO 2 (cassiterite)/aqueous solution (10 -3 mol kg -1 NaCl) interface over the temperature range from 25 to 260 °C. Experimental techniques and methods for the calculation of zeta potential at elevated temperature are described. From the obtained zeta potential data as a function of pH, the isoelectric points (IEPs) of SnO 2 were obtained for the first time. From these IEP values, the standard thermodynamic functions were calculated for the protonationdeprotonation equilibrium at the SnO 2 surface, using the 1-pK surface complexation model. It was found that the IEP values for SnO 2 decrease with increasing temperature, and this behavior is compared to the predicted values by the multisite complexation (MUSIC) model and other semitheoretical treatments, and were found to be in excellent agreement.
UR - http://www.scopus.com/inward/record.url?scp=67651121533&partnerID=8YFLogxK
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U2 - 10.1021/la900611u
DO - 10.1021/la900611u
M3 - Article
C2 - 19594185
AN - SCOPUS:67651121533
VL - 25
SP - 8101
EP - 8110
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 14
ER -