| Mineral: |
Anatase |
| Reference: |
JA98 |
| SCM Type: |
TL - Triple Layer
(C1: 1.2 F/m2, C2: 0.2 F/m2) |
| Ionic Strength: |
0.1 mol/L of
NaCl
|
| Site Type: |
»Ti-OH |
| PZC: |
5.8 |
| pK1: |
3.5 |
pK1°I=0 (Conversion to I = 0): |
3.39 |
pK12.31 nm−2 (normalized): |
4.22 |
| pK2: |
8.9 |
pK2°I=0 (Conversion to I = 0): |
8.79 |
pK22.31 nm−2 (normalized): |
8.18 |
| Site Density in nm-2: |
12.0000 |
| Original Site Density: |
12.0 sites / nm² surface
|
| Solid/Liquid Ratio in g/L: |
|
| pH Range: |
4-8 |
| Temperature in K: |
298.15 |
| Method for Site Density: |
Tritium Exchange |
| Method for Protolysis: | Potentiometric Titration |
| Fit Method: | FITEQL |
| Comment: |
mixture of anatase and rutile (see [J99a]); SSD used is from raw data of [Y75]; pK1 wrongly given with 3.5 for the counter reaction; acidity constants of TiO2 were determined using extrapolation; also experiments at I = 0.005 M NaCl were performed; citation in [J99a], [J99b]; in [JAR98]: PZC=6.2+-0.4 |
| |
