Fe2O3 photoanodes: Photocorrosion protection by thin SnO2 and TiO2 films

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43922857" target="_blank" >RIV/60461373:22310/21:43922857 - isvavai.cz</a>
Alternative codes found
RIV/61388955:_____/21:00542520
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1572665721003088?via%3Dihub#gp010" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1572665721003088?via%3Dihub#gp010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jelechem.2021.115282" target="_blank" >10.1016/j.jelechem.2021.115282</a>

Result language
angličtina
Original language name
Fe2O3 photoanodes: Photocorrosion protection by thin SnO2 and TiO2 films
Original language description
The possibility of protection of Fe2O3 (hematite) against photocorrosion in aqueous electrolytes by thin layers of TiO2 and SnO2 deposited by ALD (atomic layer deposition), was investigated. Sn-doped hematite layers, as obtained in this study by aerosol pyrolysis had significant roughness and porosity. ALD is very successful in applying conformal films to such structures. The nominal coverage by ALD films was varied between 0.5 and 7.5 nm. The presence of the TiO2 and SnO2 films was evidenced by XPS. Photocurrents were strongly diminished as the capping layer thickness was increased. The Faradaic efficiency, f, of photocorrosion in acidic media (0.01 M H2SO4) was decreased from 0.026 to 0.014 and to 0.010 by capping with either a 2 nm thick overlayer of TiO2 or of SnO2, respectively. The latter had also a positive influence on the long term photocurrent stability. © 2021 Elsevier B.V.
Czech name
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Czech description
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Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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