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Plasma sprayed (APS) coatings of nanometric Al2O3-13%TiO2 for photocatalytic application
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SYSNO ASEP 0350869 Document Type O - Others R&D Document Type Others Title Plasma sprayed (APS) coatings of nanometric Al2O3-13%TiO2 for photocatalytic application Author(s) Ctibor, Pavel (UFP-V) RID, ORCID
Štengl, Václav (UACH-T) RID, ORCID, SAI
Ageorges, H. (FR)Year of issue 2010 Language eng - English Country CZ - Czech Republic Keywords plasma spraying ; photocatalysis ; TiO2 ; Al2O3 Subject RIV JK - Corrosion ; Surface Treatment of Materials R&D Projects IAAX00430803 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20430508 - UFP-V (2005-2011) AV0Z40320502 - UACH-T (2005-2011) Annotation předneseno na konf.:Solid state chemistry 2010,10.-15.09.2010,Prague:The goal of this study is to examine a photocatalytic activity of coatings produced by Atmospheric Plasma Spraying (APS). The plasma gun used is conventional gas-stabilized type using Ar - H2 mixture as the working gas. The Al2O3-TiO2 powders are based on nanometric particles agglomerated to mean size of about 40 µm, suitable for spraying. Composition of these commercial powders is 13 wt% of TiO2 in Al2O3. The feedstock materials are composed of -alumina and anatase titanium dioxide. The coatings are analyzed by optical and scanning electron microscopy (SEM), energy dispersion probe (EDS) and X-ray diffraction. Kinetics of the photocatalytic degradation of acetone is measured on sprayed coatings by using a self-designed photoreactor. The diffuse reflectance of coatings was measured, converted to absorbance and recalculated to bandgap energy Ebg. Anatase titania from feedstock powder is converted into Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2011
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