Photocatalytic oxidation of NOx under indoor conditions using a functional wall covering

There is an increasing concern about the indoor air environment, where we spend most of our time. The air filling closed spaces is one of the main factors impoverishing health and creating the so-called "sick building syndrome". Indoor air quality can be affected by microbial contaminants, gases or particulates as well as other energy stressors. The newest tool for achieving depollution is a technology called heterogeneous photocatalytic oxidation, which uses energy from light to activate chemical reactions to degrade indoor air pollutants. This research was carried out to document the performance of a photocatalytic wall-covering under indoor conditions. The experimental results indicate that the photocatalytic oxidation is an effective air purification technology for indoor air pollutants