Degradation of Formaldehyde in the Air by Nano-TiO2 Composite Coatings in Architectural Design

Abstract

Formaldehyde is an important pollutant that endangers human physical and mental health. Currently, fabrics used in architectural design only serve as space beautification. How to combine environmental protection, antibacterial materials and building materials to develop beautiful and clean building materials is an urgent need. Nano-TiO2 composite coatings are of great significance in architectural design because of their good stability, non-toxicity, and good degradation of formaldehyde. In this paper, the performance of nano-TiO2 composite coating and nano-TiO2 in degrading formaldehyde was compared, mainly in the three cases of finishing agent concentration, temperature and initial formaldehyde concentration. The results showed that the nano-TiO2 composite coating had better degradation effect on formaldehyde than nano-TiO2. The formaldehyde degradation rate of composite coatings has been increased by 20% compared with nanometers. At 20-60 degrees Celsius, the degradation rate of nanocomposite coatings relative to nanoformaldehyde has increased by 5%. It also shows that nano-TiO2 composite coating is more suitable for use in architectural design, which can better ensure people's physical and mental health.