Photocatalytic activity dependence on the structural orientation of MOCVD TiO2 anatase films

This paper is concerned with the study of MOCVD anatase film growth with the aim of assessing the link between the TiO2 surface morphology and the photocatalytic properties of the films, in particular related to the decomposition of organic contamination in the atmosphere. We have found a relationship between the structural properties of TiO2 films deposited by MOCVD at 400°C for differing deposition times, and the corresponding photocatalytic activity which resulted to be different several times depending on the film thickness. The photocatalytic activity measurements were carried out using ethylbenzene at 50 ?g m-3 in humidified air.