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High Photocatalytic Activity of Transparent Films Composed of ZnO Nanosheets
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SYSNO ASEP 0423455 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title High Photocatalytic Activity of Transparent Films Composed of ZnO Nanosheets Author(s) Hynek, Jan (UACH-T) SAI, RID, ORCID
Kalousek, Vít (UFCH-W)
Žouželka, Radek (UFCH-W) RID
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Dzik, P. (CZ)
Rathouský, Jiří (UFCH-W) RID, ORCID
Demel, Jan (UACH-T) SAI, RID, ORCID
Lang, Kamil (UACH-T) SAI, RID, ORCIDSource Title Langmuir. - : American Chemical Society - ISSN 0743-7463
Roč. 30, č. 1 (2014), s. 380-386Number of pages 7 s. Language eng - English Country US - United States Keywords Zinc oxide ; photocatalysis ; facet enhanced Subject RIV CA - Inorganic Chemistry R&D Projects GP13-09462P GA ČR - Czech Science Foundation (CSF) GAP207/10/1447 GA ČR - Czech Science Foundation (CSF) Institutional support UACH-T - RVO:61388980 ; UFCH-W - RVO:61388955 UT WOS 000330001600046 EID SCOPUS 84892621188 DOI 10.1021/la404017q Annotation 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. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2014
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