Evaluation of the effectiveness of titanium dioxide (TiO2) Self-cleaning coating for increased protection against CBRN incidents in critical infrastructures

Self-cleaning building materials is a form of passive safety technology that is used to provide increased resistance against chemical, biological, radiological and nuclear (CBRN) incidents. This paper is aimed at evaluating the effectiveness of a self-cleaning coating based on a dispersion in ethanol of titanium dioxide (TiO2) powder at 0.5 gr/L distributed directly on stone materials. The parameters analysed in this study were stealthiness, performance against a toxic industrial chemical (TIC) and durability. It was found that the TiO2 coating has low visibility, is able to partly remove TIC from the air and has high durability.