Depth dependence of the photocatalytic reaction rate. kinetic model generalization

Abstract

Dependence of photocatalytic reaction rate on the depth of the solution in case of small depths was studied. To the best of our knowledge, there are no reports on depth dependence of the photocatalytic reaction rate in literature. The study of reaction rate on the solution depth can play an important role in the development of systems for photodecomposition of organic pollutants. The model for photodegradation with a modified rate constant, which was developed in our previous work was generalized for the application of the catalyst in both plate and powder form. The applicability of the model was proved on the methylene blue discoloration by ZnO photocatalyst powder and plates.