Abstract
Ideal Mott-Schottky plots were obtained for TiO2 single crystal electrodes after a special surface preparation procedure. Precise flatband potentials were determined as a function of pH for three different types of TiO2 boules; significant differences between boules were observed. These differences were reflected in corresponding differences in the electrode potential for the onset of anodic photocurrent. Surface treatments that produced linear Mott-Schottky plots but with frequency dispersion results in apparent flatband potentials that did not correlate with the potential for the onset of anodic photocurrent. Ideal Mott-Schottky behavior could only be obtained for the specially prepared crystals if the electrolyte concentration was greater than 0.25M.
Original language | American English |
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Pages (from-to) | 1973-1977 |
Number of pages | 5 |
Journal | Journal of the Electrochemical Society |
Volume | 129 |
Issue number | 9 |
DOIs | |
State | Published - 1982 |
NREL Publication Number
- ACNR/JA-233-4264
Keywords
- crystals
- electrolytes
- photocurrent