Rapid Oxidation of NO to NO2 at ppm Concentration Level in a Heterogeneous Photocatalytic Reaction on Metal Oxide Powders
Photocatalytic reactions of NO at ppm level with O2 were studied in the presence of TiO2 (anatase), PbO, and ZnO using a chemical luminescence NOX analyzer and a second derivative spectrometer. The rate of oxidation of NO was very high, e.g. 1930% cm−2 h−1 in a photocatalytic reaction on TiO2 (anatase). Photoadsorption of NOX also took place on these metal oxides.