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High Photocatalytic Activity of Transparent Films Composed of ZnO Nanosheets
- 1.0423455 - ÚACH 2014 RIV US eng J - Journal Article
Hynek, Jan - Kalousek, Vít - Žouželka, Radek - Bezdička, Petr - Dzik, P. - Rathouský, Jiří - Demel, Jan - Lang, Kamil
High Photocatalytic Activity of Transparent Films Composed of ZnO Nanosheets.
Langmuir. Roč. 30, č. 1 (2014), s. 380-386. ISSN 0743-7463
R&D Projects: GA ČR GP13-09462P; GA ČR GAP207/10/1447
Institutional support: RVO:61388980 ; RVO:61388955
Keywords : Zinc oxide * photocatalysis * facet enhanced
Subject RIV: CA - Inorganic Chemistry
Impact factor: 4.457, year: 2014
Nanometric thin films were prepared by dip-coating and inkjet printing ZnO nanosheets on glass plates. The side-by-side alignment of the ZnO nanosheets on the substrate resulted in thin, transparent, oriented ZnO surfaces with the high-energy {001} facets exposed. The method of nanosheet deposition affected the film morphology; the dip-coated films were very smooth and nonporous, while the inkjet-printed films were rough and porous with the estimated void volume approximately 60-70% of the total film volume. The first-order rate constants for the photocatalytic degradation of 4-chlorophenol on the nanosheet-based films were approximately two times larger than those on nanocolumnar ZnO films or ZnO films prepared by the sol-gel technique. We attribute the high photocatalytic activity of the ZnO nanosheets to the fact that their {001} facets were predominantly exposed to the oxidized substrate. This surface arrangement and the simplicity of fabricating the ZnO nanosheet-based films make them promising for the construction of optical devices and dye-sensitized solar cells.
Permanent Link: http://hdl.handle.net/11104/0229600
Number of the records: 1