Adsorption kinetics of the photocatalytic reaction of nano-TiO2 cement-based materials: A review

Nano-TiO2 cement-based materials have been widely used as green building materials due to their effective photocatalytic ability to degrade air pollutants. The photocatalytic reaction adsorption kinetics can accurately describe the photocatalytic reactions of nano-TiO2 cement-based materials. In this paper, the photocatalytic reaction mechanism and adsorption kinetics of nano-TiO2 cement-based materials have been introduced. The mechanisms of the effect of environmental factors such as the nano-TiO2 photocatalytic activity, TiO2 content, reactant concentration, relative humidity, and light intensity on the photocatalytic reaction of nano-TiO2 cement-based materials have been analyzed in order to obtain an effective way to improve the photocatalytic performance. Finally, a comparative analysis of the various types of photocatalytic adsorption kinetic models has been carried out to provide a reference for establishing models with wider applicability in engineering.