Laboratoire CNGE, Ecole Nationale Supérieure de Chimie de Rennes, Avenue du Général Leclerc, 35700, Rennes, France
Abstract:
The Langmuir–Hinshelwood (L–H) kinetic model has been used to describe the degradation of the toluene on three TiO2-based photocatalysts supports. The determination of the L–H rate constant (k) showed that the UV illumination parameter seems to be more important than the quantity of TiO2 per unit area. The constant k is the greatest for the less density TiO2 photocatalyst. The comparison between the Langmuir adsorption constant (K) in the dark and under UV irradiation shows that the adsorption constant for the high kinetic catalyst increases while it decreases for the other two.