A review on photo catalysis for air treatment from catalyst development to reactor design

The intriguing possibilities in environmental cleanup, chemical synthesis, and energy innovation have prompted significant research into photocatalysis for decades. However, photocatalysis' practical/commercial/industrial uses in the area of construction materials have been limited. The problem of poor quantum efficiency in solar energy conversion and low pollutant levels in photodegradation is very difficult to address. Photocatalytic oxidation (PCO) of different pollutants, such as volatile organic chemicals (VOCs) or inorganic gases (NOx, SOx, CO, H2S, and ozone, among others) at relatively low concentrations, seems to be more commercially viable. This study begins with an introduction to PCO's contaminant removal process, followed by a thorough examination and discussion of photo - catalysts and reactor architecture. This article intends to provide basic and comprehensive information for paving the way for commercial gas-phase photo degradation.