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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Isotahdon, Elisa
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2023Penetration of corrosive species into copper exposed to simulated O2-free groundwater by time-of-flight secondary ion mass spectrometry (ToF-SIMS)citations
- 2023Characterization of surface films that develop on pre-oxidized copper in anoxic simulated groundwater with sulphidecitations
- 2023Reply to comment on “Penetration of corrosive species into copper exposed to simulated O 2 -free groundwater by time-of-flight secondary ion mass spectrometry (ToF-SIMS)”citations
- 2023Pitting corrosion on highly alloyed stainless steels in dilute sulphuric acid containing sodium chloridecitations
- 2021Corrosion of copper in sulphide containing environment: the role and properties of sulphide films – Annual report 2020
- 2021Corrosion-induced microstructure degradation of copper in sulfide-containing simulated anoxic groundwater studied by synchrotron high-energy X-ray diffraction and ab-initio density functional theory calculationcitations
- 2020Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environmentcitations
- 2019Tribocorrosion behaviour of two low-alloy steel grades in simulated waste solutioncitations
- 2019Tribocorrosion behaviour of non-passivating alloys
- 2019Behaviour of leaded tin bronze in simulated seawater in the absence and presence of tribological contact with alumina counterbodycitations
- 2019Tribocorrosion behaviour of non-passivating alloys:case examples and approaches to wear-corrosion synergy determination
- 2018Tribocorrosion behaviour of aluminium bronze in 3.5 wt.% NaCl solutioncitations
- 2017High temperature corrosion of gradient tubes for high temperature application
- 2017Corrosion Losses, Mechanisms and Protection Strategies for Sintered Nd-Fe-B Magnets
- 2016Development of Magnetic Losses During Accelerated Corrosion Tests for Nd-Fe-B Magnets Used in Permanent Magnet Generatorscitations
- 2015Enhanced photoactive and photoelectrochemical properties of TiO2 sol-gel coated steel by the application of SiO2 intermediate layercitations
Places of action
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article
Enhanced photoactive and photoelectrochemical properties of TiO2 sol-gel coated steel by the application of SiO2 intermediate layer
Abstract
<p>Photocatalysis is a promising solution for purifying air and water from pollutants, yet more efficient photocatalytic materials are needed. A new approach is proposed in this paper for enhancing the photoactive and photoelectrical properties of anatase TiO<sub>2</sub> films by applying an intermediate SiO<sub>2</sub> film between the TiO<sub>2</sub> film and the stainless steel substrate. TiO<sub>2</sub> and SiO<sub>2</sub> coatings are synthesized by a sol-gel method and the thickness of TiO<sub>2</sub> film is varied in order to obtain improved understanding on the role of thickness in photocatalytic and electrochemical performance. The obtained coatings are systematically characterized in terms of microstructure using such techniques as field-emission scanning electron microscopy (FE-SEM), Raman spectroscopy and X-ray diffraction (XRD), that demonstrate, e.g., the anatase phase structure of the TiO<sub>2</sub> films. The enhanced photocatalytic properties of SiO<sub>2</sub>/TiO<sub>2</sub> coatings as compared to TiO<sub>2</sub> films are verified using methylene blue (MB) discoloration tests, while the improved photoelectrochemical properties are shown by potentiodynamic i-V scans, open circuit potential (OCP) monitoring and electrochemical impedance spectroscopy (EIS). We attribute the beneficial effect of the intermediate SiO<sub>2</sub> film on the photocatalytic and photoelectrochemical performance to the high electrical resistance of the SiO<sub>2</sub> that imposes a high-energy barrier for electron transfer and, therefore, (partly) insulates the TiO<sub>2</sub> film from the substrate and acts as a capacitor for photo-generated electrons under illumination. The presented results show an effective way of enhancing the photocatalytic performance of anatase TiO<sub>2</sub> films.</p>