Figure 3From: Persistent deNOx Ability of CaAl2O4:(Eu, Nd)/TiO2-xN y Luminescent PhotocatalystThe photocatalytic deNO x activity of the prepared samples during UV light irradiation for 30 min followed by turning off light, while NO gas was continuously flowed in the dark for 3 h. a CaAl2O4:(Eu, Nd)/TiO2-xN y composite; b brookite phase TiO2-xN y ; c CaAl2O4:(Eu, Nd)/undoped TiO2 (P25) composite.Back to article page