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

• Published in: Construction & building materials Vol. 370; p. 130462
• Main Authors: Jia, Zong-Ming, Zhao, Yan-Ru, Shi, Jin-Na
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 17.03.2023
• Subjects: Adsorption; Kinetic models; Nano-TiO2 cement-based materials; Photocatalytic reaction; Adsorption; Photocatalytic reaction; Nano-TiO2 cement-based materials; Kinetic models
• ISSN: 0950-0618; 1879-0526
• DOI: 10.1016/j.conbuildmat.2023.130462

•The mechanism of the adsorption photocatalytic reaction of nano-TiO2 cement-based materials was summarized.•The mechanism of various factors on the photocatalytic reaction of nano-TiO2 cement-based materials was analyzed.•The advantages, disadvantages and applicability of various photocatalytic adsorption kinetic models are summarized. 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.