Photocorrosion Mechanism of TiO2-Coated Photoanodes
Atomic layer deposition was used to coat CdS photoanodes with 7 nm thick TiO2 films to protect them from photocorrosion during photoelectrochemical water splitting. Photoelectrochemical measurements indicate that the TiO2 coating does not provide full protection against photocorrosion. The degradati...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2015/457980 |
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| _version_ | 1832556741494046720 |
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| author | Arjen Didden Philipp Hillebrand Bernard Dam Roel van de Krol |
| author_facet | Arjen Didden Philipp Hillebrand Bernard Dam Roel van de Krol |
| author_sort | Arjen Didden |
| collection | DOAJ |
| description | Atomic layer deposition was used to coat CdS photoanodes with 7 nm thick TiO2 films to protect them from photocorrosion during photoelectrochemical water splitting. Photoelectrochemical measurements indicate that the TiO2 coating does not provide full protection against photocorrosion. The degradation of the film initiates from small pinholes and shows oscillatory behavior that can be explained by an Avrami-type model for photocorrosion that is halfway between 2D and 3D etching. XPS analysis of corroded films indicates that a thin layer of CdS remains present on the surface of the corroded photoanode that is more resilient towards photocorrosion. |
| format | Article |
| id | doaj-art-4ad2d11102fc43bd90f649579d63a731 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-4ad2d11102fc43bd90f649579d63a7312025-02-03T05:44:25ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2015-01-01201510.1155/2015/457980457980Photocorrosion Mechanism of TiO2-Coated PhotoanodesArjen Didden0Philipp Hillebrand1Bernard Dam2Roel van de Krol3Materials for Energy Conversion and Storage, Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628 BL Delft, NetherlandsHelmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Solar Fuels, Hahn-Meitner-Platz 1, 14109 Berlin, GermanyMaterials for Energy Conversion and Storage, Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628 BL Delft, NetherlandsMaterials for Energy Conversion and Storage, Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2628 BL Delft, NetherlandsAtomic layer deposition was used to coat CdS photoanodes with 7 nm thick TiO2 films to protect them from photocorrosion during photoelectrochemical water splitting. Photoelectrochemical measurements indicate that the TiO2 coating does not provide full protection against photocorrosion. The degradation of the film initiates from small pinholes and shows oscillatory behavior that can be explained by an Avrami-type model for photocorrosion that is halfway between 2D and 3D etching. XPS analysis of corroded films indicates that a thin layer of CdS remains present on the surface of the corroded photoanode that is more resilient towards photocorrosion.http://dx.doi.org/10.1155/2015/457980 |
| spellingShingle | Arjen Didden Philipp Hillebrand Bernard Dam Roel van de Krol Photocorrosion Mechanism of TiO2-Coated Photoanodes International Journal of Photoenergy |
| title | Photocorrosion Mechanism of TiO2-Coated Photoanodes |
| title_full | Photocorrosion Mechanism of TiO2-Coated Photoanodes |
| title_fullStr | Photocorrosion Mechanism of TiO2-Coated Photoanodes |
| title_full_unstemmed | Photocorrosion Mechanism of TiO2-Coated Photoanodes |
| title_short | Photocorrosion Mechanism of TiO2-Coated Photoanodes |
| title_sort | photocorrosion mechanism of tio2 coated photoanodes |
| url | http://dx.doi.org/10.1155/2015/457980 |
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