Visualizing reaction pathway for the photo-transformation of NO and N into NO over WO photocatalyst.

A photo-transformation of NO into NO at the N presence is discovered over a WO photocatalyst under UV/visible light irradiation. During the photoreaction, we found that both NO and N disappear and additional NO appears at the same time. A reaction pathway is proposed and verified by the results of an online chemiluminesce NO analyzer, GC-TCD, and in situ DRIFT monitoring of the reactants and products in mixtures. The collected data indicates that NO + ½ N → 2NO is an overall reaction of this photocatalytic reaction over a WO photocatalyst. Graphical Abstract: [ABSTRACT FROM AUTHOR]