Detail publikace

Kinetics study of photocatalytic oxygen indicator reactions

DOBIÁŠ, V. FILIPI, D. VESELÁ, M. KRČMA, F. VESELÝ, M.

Originální název

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The indicators are comprised of TiO2, Remazol Brilliant Blue R, glycerol, and polymer. Two different polymer matrices, poly(vinyl acetate) (PVAC) or (carboxy)methyl cellulose (CMC) were used. The indicators were printed on a plastic foil and covered with a UV curable coating. Data for the kinetic study of photocatalytic reduction and oxidation were gathered with reflectance spectrophotometer and the kinetic analysis was based on the change of the indicator's optical density. Both indicators were successfully activated with UVA and both detected oxygen. The rate of oxidation depended on percentual oxygen concentration, increasing with increasing oxygen concentration. The PVAC based indicator was much quicker to detect oxygen than its CMC counterpart, the former having a color change response to oxygen that is easily detected by naked eye in just one minute.

Klíčová slova

Printing; Oxygen sensing; Smart packaging; Reaction rate; Photocatalysis

Autoři

DOBIÁŠ, V.; FILIPI, D.; VESELÁ, M.; KRČMA, F.; VESELÝ, M.

Vydáno

1. 10. 2024

Nakladatel

ELSEVIER SCIENCE SA

Místo

LAUSANNE

ISSN

1010-6030

Periodikum

Journal of Photochemistry and Photobiology A:Chemistry

Ročník

455

Číslo

115762

Stát

Švýcarská konfederace

Strany počet

URL

https://www.sciencedirect.com/science/article/pii/S101060302400306X

BibTex

@article{BUT189121,
  author="Vojtěch {Dobiáš} and Denisa {Filipi} and Mária {Veselá} and František {Krčma} and Michal {Veselý}",
  title="Kinetics study of photocatalytic oxygen indicator reactions",
  journal="Journal of Photochemistry and Photobiology A:Chemistry",
  year="2024",
  volume="455",
  number="115762",
  pages="7",
  doi="10.1016/j.jphotochem.2024.115762",
  issn="1010-6030",
  url="https://www.sciencedirect.com/science/article/pii/S101060302400306X"
}