Photocatalytic oxidation for degradation of VOCs

Abstract

Volatile organic compounds (VOCs) are the major group of indoor air pollutants, which significantly impact indoor air quality (IAQ) and influence human health. Photocatalytic oxidation (PCO) is a cost-ef- fective technology for VOCs removal, compared with adsorption, biofiltration, or thermal catalysis method. Development of active photocatalyst systems is cru- cial for the PCO reaction. In this paper, the catalyst systems for photocatalysis under UV and visible light were discussed and the kinetics of photocatalytic oxi- dation was presented in order that some key influ- encing factors (relative huminity, light intensity, ini- tial contaminant concentration and mass of catalyst) had also been studied. In addition, the future re- search directions were also presented in this paper.