Publication result detail

High photocatalytic activity of transparent films composed of ZnO nanosheets

HYNEK, J.; KALOUSEK, V.; ZOUZELKA, R.; BEZDICKA, P.; DZIK, P.; RATHOUSKY, J.; DEMEL, J.; LANG, K.

Original Title

High photocatalytic activity of transparent films composed of ZnO nanosheets

English Title

High photocatalytic activity of transparent films composed of ZnO nanosheets

Type

WoS Article

Original Abstract

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.

English abstract

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.

Keywords

layered ZnO, transparent film, photocatalysis, nanosheets

Key words in English

layered ZnO, transparent film, photocatalysis, nanosheets

Authors

HYNEK, J.; KALOUSEK, V.; ZOUZELKA, R.; BEZDICKA, P.; DZIK, P.; RATHOUSKY, J.; DEMEL, J.; LANG, K.

RIV year

2014

Released

16.12.2013

Publisher

ACS Publications

Location

Washington, DC

ISBN

0743-7463

Periodical

Langmuir

Volume

30

Number

1

State

United States of America

Pages from

380

Pages to

386

Pages count

7

BibTex

@article{BUT103680,
  author="HYNEK, J. and KALOUSEK, V. and ZOUZELKA, R. and BEZDICKA, P. and DZIK, P. and RATHOUSKY, J. and DEMEL, J. and LANG, K.",
  title="High photocatalytic activity of transparent films composed of ZnO nanosheets",
  journal="Langmuir",
  year="2013",
  volume="30",
  number="1",
  pages="380--386",
  doi="10.1021/la404017q",
  issn="0743-7463"
}