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

István Ilisz; Katalin Föglein; András Dombi

doi:10.1016/S1381-1169(97)00296-3

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

István Ilisz, Katalin Föglein, András Dombi

University of Szeged

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	55-61
Number of pages	7
Journal	Journal of Molecular Catalysis A: Chemical
Volume	135
Issue number	1
DOIs	https://doi.org/10.1016/S1381-1169(97)00296-3
Publication status	Published - 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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Ilisz, I., Föglein, K., & Dombi, A. (1998). The photochemical behavior of hydrogen peroxide in near UV-irradiated aqueous TiO₂ suspensions. Journal of Molecular Catalysis A: Chemical, 135(1), 55-61. https://doi.org/10.1016/S1381-1169(97)00296-3

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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.",

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AB - 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.

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