Journal
COATINGS
Volume 12, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/coatings12121876
Keywords
magnetron sputtering; SrTiO3; TiO2; PEC; water splitting; hydrogen
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Funding
- SONATA Project from the National Science Centre [2016/23/D/ST5/02882]
- ENSEMBLE3 Project within the Teaming for Excellence Horizon 2020 programme of the European Commission [857543]
- International Research Agendas Programme of the Foundation for Polish Science [MAB/2020/14]
- European Union under the European Regional Development Fund
- Teaming Horizon 2020 programme of the European Commission
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In this study, photoelectrochemical electrodes based on SrTiO3-TiO2 were fabricated and their photoactivity was investigated. The results showed that a 50 nm thick layer prepared on titanium had the highest photocurrent density.
Hydrogen as a potential fuel of the future can be produced in a photoelectrochemial water splitting process. Herein, we demonstrate the fabrication of photoelectrochemical electrodes based on SrTiO3-TiO2 with a eutectic composition on titanium and conductive glass FTO (fluorine doped tin oxide) substrates by magnetron sputtering. The XRD and SEM/EDS reveal the amorphous nature and homogeneity of the sputtered material. The influence of the layer thickness on the photoactivity was investigated. There were three-layer thicknesses (50, 350, and 750 nm) selected by sputtering for 12, 80 and 220 min for the preparation of photoelectrodes. The photoelectrochemical analysis confirms the photoactivity of the obtained layers under illumination with a xenon lamp (600 mW/cm(2)). The highest photocurrent density of 11.8 x 10(-3) mAcm(-2) at 1.2 V vs. SCE was recorded for a layer thickness of 50 nm on titanium as better matching between the Ti work function and the conduction band.
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