Titania Thin Film Coated Glass for Simultaneous Ammonia Degradation and UV Light Blocking Layer in Photovoltaics

Krunoslav Juraić (), Mario Bohač, Jasper Rikkert Plaisier, Aden Hodzic, Pavo Dubček, Davor Gracin, Ivana Grčić, Jan Marčec, Tihana Čižmar and Andreja Gajović
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Krunoslav Juraić: Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
Mario Bohač: Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
Jasper Rikkert Plaisier: Elettra-Sincrotrone Trieste, SS 14, km 163.5, 34149 Basovizza, Italy
Aden Hodzic: Central European Research Infrastructure Consortium (CERIC-ERIC), SS 14, km 163.5, 34149 Basovizza, Italy
Pavo Dubček: Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
Davor Gracin: Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
Ivana Grčić: Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000 Varaždin, Croatia
Jan Marčec: Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000 Varaždin, Croatia
Tihana Čižmar: Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
Andreja Gajović: Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia

Sustainability, 2022, vol. 14, issue 17, 1-13

Abstract: In this work, we have investigated the potential dual application of TiO 2 thin films as a photocatalyst for ammonia degradation, and as a UV light blocking layer in c-Si photovoltaics. For this purpose, we deposited a series of TiO 2 thin films on a glass substrate by reactive magnetron sputtering and analysed the influence of the deposition parameters (O 2 /Ar working gas content and pressure) on the structural, optical and photocatalytic properties. All samples are nanocrystalline anatase TiO 2 and have a uniform surface (RMS roughness < 5 nm) in a wide range of magnetron sputtering deposition parameters. They are transparent in the Vis/NIR spectral range and strongly absorb light in the UV range above the optical bandgap energy (3.3 eV), which makes them suitable for the use as UV blocking layers and photocatalysts. The photocatalytic properties were studied in a mini-photocatalytic wind tunnel reactor by examining ammonia degradation. A kinetic study was performed to estimate the reaction rate constants for all samples. The intrinsic reaction rate constant confirmed the crucial role of surface morphology in ammonia decomposition efficiency.

Keywords: titanium dioxide; thin films; reactive magnetron sputtering; optical properties; photocatalysis; ammonia degradation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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