TiO_2光催化净化室内低浓度氮氧化物

TiO_2 Photocatalytic Oxidation of Indoor Nitrogen Oxides

氮氧化物是室内环境中危害人体健康的重要污染物之一,主要介绍TiO2光催化氧化法去除氮氧化物的机理,影响氮氧化物光催化转化的因素,如初始浓度、温湿度、停留时间和光强等;目前常见的提高氮氧化物光催化转化的方法,如Fe3+离子掺杂和TiO2与活性炭纤维ACF复合等;以及TiO2催化剂失活再生问题。

Nitrogen oxides, one of the indoor pollutants, do harm to human health, this paper introduces the mechanism of the photocatalytic oxidation of nitrogen oxides, the factors influencing the reaction, such as initial concentration, humidity, temperature, space time, radiation intensity and so on, and the general means of improving the photocatalytic oxidation efficiency, such as modifying TiO2 with Fe^3＋ or combining it with ACF, etc. and the deactivation of TiO2.