Effects of Anodic Aluminum Oxide Substrate Pore Geometry on the Gas-Phase Photocatalytic Activity of ZnO/Al2O3 Composites Prepared by Atomic Layer Deposition

We report on the photocatalytic activity of ZnO layers deposited by atomic layer deposition on a porous anodic aluminum oxide substrate with hexagonal pore symmetry and varied pore dimensions. ZnO/Al2O3 composites were prepared with pore diameters in the range 93-134 nm and interpore distance in the...

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Veröffentlicht in:	Symmetry (Basel) 2021-08, Vol.13 (8), p.1456, Article 1456
Hauptverfasser:	Stefanov, Bozhidar I., Blagoev, Blagoy S., osterlund, Lars, Tzaneva, Boriana R., Angelov, George V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acetaldehyde Aluminum oxide anodic aluminum oxide Atomic layer epitaxy Catalytic activity Composite materials Diameters Electrolytes Experiments Mass transfer Morphology Multidisciplinary Sciences Oxidation Photocatalysis Photocatalysts photocatalytic activity Scanning electron microscopy Science & Technology Science & Technology - Other Topics Software Substrates Zinc oxide
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Zusammenfassung:	We report on the photocatalytic activity of ZnO layers deposited by atomic layer deposition on a porous anodic aluminum oxide substrate with hexagonal pore symmetry and varied pore dimensions. ZnO/Al2O3 composites were prepared with pore diameters in the range 93-134 nm and interpore distance in the range 185-286 nm, and their photocatalytic activity was measured for gas-phase photocatalytic oxidation of acetaldehyde at varying UV illumination intensities (0.08-3.94 mW cm(-2)). The results show that substrates with narrower pore diameters (
ISSN:	2073-8994 2073-8994
DOI:	10.3390/sym13081456