The photochemical behavior of hydrogen peroxide in near UV-irradiated aqueous TiO2 suspensions

István Ilisz, Katalin Föglein, András Dombi

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The kinetic behavior of H2O2 decomposition in near UV-irradiated aqueous TiO2 suspensions was investigated. The effects of the H2O2 concentration, the catalyst loading, the dissolved oxygen concentration, and the light intensity on the initial photodecomposition rate were studied. The observed kinetics were treated by both the Langmuir-Hinshelwood and the Freundlich model; the latter proved more successful for characterization of the system. The H2O2 photodegradation rate was found to be directly proportional to the light intensity and it increased with the catalyst concentration up to a saturation limit. The concentration of dissolved oxygen had no significant effect on the photodecomposition rate.

Original languageEnglish
Pages (from-to)55-61
Number of pages7
JournalJournal of Molecular Catalysis A: Chemical
Volume135
Issue number1
DOIs
Publication statusPublished - Sep 29 1998

Keywords

  • Hydrogen peroxide
  • Kinetics
  • Photodecomposition
  • Titanium dioxide

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Physical and Theoretical Chemistry

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