Photocatalysis

Treatment of air pollutants, combustion gases, etc. Especially for the oxidation of NOx, VOCs by means of a catalytic bed of metal oxides or semiconductor metal sulphides such as TiO2, WO3, ZnO, CdS, graphitic carbon nitride (g-C3N4) highly reactive by the incidence of a light source.

Gases with polluting compounds that are difficult to oxidize by biological means or under mild oxidation conditions (VOCs are very hydrophobic and difficult to absorb, adsorb and degrade). They can come from industrial sources, combustion, or waste treatment/valorization processes

Oxidation efficiencies >90%

Need for additional stages of removal of gaseous compounds;
Consumption of expensive catalysts and energy in the form of light;
Generation of complex by-products to characterize;