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.
|Number of pages
|Journal of Photochemistry and Photobiology A: Chemistry
|Published - 31 Jan 1998
Bibliographical noteFunding 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.