Photocatalytic oxidation of 2,4-dichlorophenoxyacetic acid with titania photocatalyst. Comparison of supported and suspended TiO2

A. D. Modestov; O. Lev

doi:10.1016/S1010-6030(97)00269-4

Photocatalytic oxidation of 2,4-dichlorophenoxyacetic acid with titania photocatalyst. Comparison of supported and suspended TiO₂

A. D. Modestov, O. Lev^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

79 Scopus citations

Abstract

The photodegradation of 2,4-dichlorophenoxyacetic acid using illuminated titania particles was studied in buffered water solutions at pH 9.2. A simplified phenomenological model which enables comparison of activity of suspended and supported photocatalyst on the basis of utilisation of light is proposed. The model shows saturation of photodegradation rate with increase of amount of photocatalyst on support or in suspension. The features of the model were verified by studies of the photocatalytic activity of TiO₂ suspended and supported on flat glass plate and on floating particles.

Original language	English
Pages (from-to)	261-270
Number of pages	10
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	112
Issue number	2-3
DOIs	https://doi.org/10.1016/S1010-6030(97)00269-4
State	Published - 31 Jan 1998

Bibliographical note

Funding Information:
We thank the BMBF, Germany and the Ministry of Science, Israel for supporting this research. The authors wish to express their gratitude to Dr. J. Gun and Dr. S. Sampath valuable remarks made during the preparation of the manuscript.

Keywords

2,4-D
Photocatalysis
Photodegradation
Titania

Access to Document

10.1016/S1010-6030(97)00269-4

Cite this

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abstract = "The photodegradation of 2,4-dichlorophenoxyacetic acid using illuminated titania particles was studied in buffered water solutions at pH 9.2. A simplified phenomenological model which enables comparison of activity of suspended and supported photocatalyst on the basis of utilisation of light is proposed. The model shows saturation of photodegradation rate with increase of amount of photocatalyst on support or in suspension. The features of the model were verified by studies of the photocatalytic activity of TiO2 suspended and supported on flat glass plate and on floating particles.",

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AB - The photodegradation of 2,4-dichlorophenoxyacetic acid using illuminated titania particles was studied in buffered water solutions at pH 9.2. A simplified phenomenological model which enables comparison of activity of suspended and supported photocatalyst on the basis of utilisation of light is proposed. The model shows saturation of photodegradation rate with increase of amount of photocatalyst on support or in suspension. The features of the model were verified by studies of the photocatalytic activity of TiO2 suspended and supported on flat glass plate and on floating particles.

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