Study and Modeling of the Kinetics of the Photocatalytic Destruction of Stearic Acid Islands on TiO₂ Films.

ABSTRACT: The kinetics of the removal of stearic acid (SA) islands by photocatalytic coatings is controversial, with some reporting that the islands fade as their thickness, h, decreases with the irradiation time, t, but maintain a constant area, a, -da/dt = 0, and others reporting that -dh/dt = 0 and -da/dt = -constant, i.e., the islands shrink, rather than fade. This study attempts to understand the possible cause for these two very different observations through a study of the destruction of a cylindrical SA island and an array of such islands, on two different photocatalytic films, namely, Activ self-cleaning glass, and a P25 TiO₂ coating on glass, which have established uniform and heterogeneous surface activities, respec

SUBMITTER: Alofi S 

PROVIDER: S-EPMC10316406 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature