Transparent Nanotubular TiO2 Photoanodes Grown Directly on FTO Substrates
Abstract
:1. Introduction
2. Results and Discussion
2.1. Optimizing Electrolyte Composition
2.2. The Growth of TNT Array and Optical Properties
2.3. Crystallinity and Morphology of TNT Arrays
2.4. Photoelectrochemical Activity
2.5. Photocatalytic Activity
3. Experimental Part
3.1. TNT Preparation and Characterization
3.2. Characterization Methods
3.3. Photocatalytic Activity
3.4. Photoelectrochemical Activity
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Sample Availability: Samples of the compounds are not available from the authors. |
Name of Sample | Ti Film Thickness (nm) | Anodization Time (s) | Passed Charge (mC cm−2) | TNT Thickness (nm) | Photocurrent Density * (µA cm−2) |
---|---|---|---|---|---|
100 nm | 100 | 25 | 524 | 180 ± 20 | 43 ± 2 |
600 nm | 600 | 138 | 2404 | 1000 ± 50 | 196 ± 5 |
1000 nm | 1000 | 290 | 4226 | 2450 ± 50 | 300 ± 5 |
1300 nm | 1300 | 538 | 5460 | 3500 ± 50 | 294 ± 5 |
Ti foil | - | 887 | 4155 | - | 315 ± 5 |
Thickness of Ti on FTO | TNT Thickness | ttb(90) (s) | 1/ttb (90) (s−1) |
---|---|---|---|
100 nm | 180 nm | 50 | 0.020 |
600 nm | 1000 nm | 10 | 0.100 |
1000 nm | 2500 nm | 9 | 0.111 |
Ti foil | - | ≥420 | ≤0.0024 |
non-annealed TNT | - | ≥420 | ≤0.0024 |
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Paušová, Š.; Kment, Š.; Zlámal, M.; Baudys, M.; Hubička, Z.; Krýsa, J. Transparent Nanotubular TiO2 Photoanodes Grown Directly on FTO Substrates. Molecules 2017, 22, 775. https://doi.org/10.3390/molecules22050775
Paušová Š, Kment Š, Zlámal M, Baudys M, Hubička Z, Krýsa J. Transparent Nanotubular TiO2 Photoanodes Grown Directly on FTO Substrates. Molecules. 2017; 22(5):775. https://doi.org/10.3390/molecules22050775
Chicago/Turabian StylePaušová, Šárka, Štěpán Kment, Martin Zlámal, Michal Baudys, Zdeněk Hubička, and Josef Krýsa. 2017. "Transparent Nanotubular TiO2 Photoanodes Grown Directly on FTO Substrates" Molecules 22, no. 5: 775. https://doi.org/10.3390/molecules22050775