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Hematite films by aerosol pyrolysis: Influence of substrate and photocorrosion suppression by TiOinf2/inf capping
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SYSNO ASEP 0506502 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Hematite films by aerosol pyrolysis: Influence of substrate and photocorrosion suppression by TiOinf2/inf capping Author(s) Krýsa, J. (CZ)
Imrich, T. (CZ)
Paušová, Š. (CZ)
Krýsová, Hana (UFCH-W) RID, ORCID
Neumann-Spallart, M. (CZ)Source Title Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 335, JAN 2019 (2019), s. 418-422Number of pages 5 s. Language eng - English Country NL - Netherlands Keywords Aerosol pyrolysis ; Photocorrosion ; α-Fe2O3/TiO2 electrodes 2 3 2 Subject RIV CG - Electrochemistry OECD category Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) R&D Projects GA17-20008S GA ČR - Czech Science Foundation (CSF) EF16_013/0001821 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UFCH-W - RVO:61388955 UT WOS 000475744800051 EID SCOPUS 85060293368 DOI 10.1016/j.cattod.2019.01.033 Annotation Sn-doped hematite (Fe2O3) films were prepared by aerosol pyrolysis (AP) on fluorine doped tin oxide (FTO), titanium and stainless steel. Photoactive electrodes were obtained in all cases and the photosensitivity had an onset around 650 nm. Maximum incident photon to electron conversion efficiency (IPCE) was 0.3 at 300 nm for samples deposited on FTO. The Faradaic efficiency of the photocorrosion reaction was found to be 0.47% for an unprotected FTO/hematite electrode in H2SO4. The Faradaic efficiency of this dissolution reaction decreased to 0.3% for a hematite electrode covered with a 65 nm thick dip coated layer of TiO2, and to 0.17% for a sample with a spray coated TiO2 layer, thus proving the beneficial role of TiO2 in protecting hematite against photocorrosion. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0297735
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