Photocatalytic NOx Removal

概要

TiO₂ photocatalyst on building surfaces oxidizes nitrogen oxides (NOx) from vehicle exhaust to nitric acid (HNO₃), which is then washed away by rain. Photocatalytic concrete and pavement coatings can reduce local NOx levels by 25–45%. This passive pollution remediation works continuously in sunlight.

参加者

日常の例

Some cities use photocatalytic concrete in roads and buildings that actively clean the air of vehicle exhaust pollution.

産業上の重要性

光触媒建設材料は都市環境における大気質改善のための成長市場を形成している。