Investigation of a TiO2 photocatalyst immobilized with poly(vinyl alcohol)

Péter Hegedűs, Erzsébet Szabó-Bárdos, O. Horváth, Péter Szabó, K. Horváth

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Immobilization of TiO2 photocatalyst was realized with application of poly(vinyl alcohol) (PVA). However, these PVA-based foils were too instable to be used for photocatalytic water cleaning. Their stability could be significantly enhanced by a thermal treatment, but this procedure generated various water-soluble derivatives such as aldehydes, ketones, and aromatic species. Photocatalytic pre-treatment of the foils proved to be suitable to remove these products from the surface of the composite. After three subsequent pre-treating cycles of irradiation and rinsing, the PVA-TiO2 foil became applicable for photocatalytic degradation of Triton X-100, a widely used non-ionic detergent. The composite catalyst kept its stability and efficiency even after some cycles of re-usage, while its surface underwent a perceptible, although quantitatively negligible degradation.

Original languageEnglish
Pages (from-to)179-186
Number of pages8
JournalCatalysis Today
Volume284
DOIs
Publication statusPublished - Apr 15 2017

Fingerprint

Photocatalysts
Metal foil
Alcohols
Degradation
Water
Detergents
Octoxynol
Composite materials
Ketones
Aldehydes
Cleaning
Heat treatment
Irradiation
Derivatives
Catalysts

Keywords

  • Immobilization
  • Organic pollutant
  • Thermal decomposition of PVA
  • TiO based photocatalysis
  • Triton X-100

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

Investigation of a TiO2 photocatalyst immobilized with poly(vinyl alcohol). / Hegedűs, Péter; Szabó-Bárdos, Erzsébet; Horváth, O.; Szabó, Péter; Horváth, K.

In: Catalysis Today, Vol. 284, 15.04.2017, p. 179-186.

Research output: Contribution to journalArticle

Hegedűs, Péter ; Szabó-Bárdos, Erzsébet ; Horváth, O. ; Szabó, Péter ; Horváth, K. / Investigation of a TiO2 photocatalyst immobilized with poly(vinyl alcohol). In: Catalysis Today. 2017 ; Vol. 284. pp. 179-186.
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