Photocatalytic NOx Removal

概述

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.

参与者

日常示例

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

工业重要性

光催化去除NOx技术被应用于城市道路铺装和建筑外墙，是减少城市空气污染的绿色解决方案。