Figure 1From: Persistent deNOx Ability of CaAl2O4:(Eu, Nd)/TiO2-xN y Luminescent PhotocatalystOverlap of diffuse reflectance spectra of a undoped TiO 2 (P25) and b TiO 2- x N y and c emission spectrum of CaAl 2 O 4 :(Eu, Nd).Back to article page