Nitrogen-doped titanium oxide (TiO 2-xN y) nanocrystalline with different phase of anatase, rutile or brookite was coupled with CaAl 2O 4:(Eu, Nd) particles by planetary ball milling treatment. The effect of phase structures on the persistent photocatalytic activity of a CaAl 2O 4:(Eu, Nd)/TiO 2- xN y composite was evaluated for the oxidative destruction of NO. The persistent catalytic degradation of NO by TiO 2- xN y was realized in the presence of CaAl 2O 4:(Eu, Nd), which shows a long afterglow luminescence. The persistent photocatalytic property of composites changed depending on the crystalline phase of TiO 2-xN y, i.e., the persistent photocatalytic property of CaAl 2O 4:(Eu, Nd) combined with brookite type TiO 2-xN y was superior to those of anatase or rutile phase TiO 2-xN y.
- Crystalline phase
- Persistent catalytic activity
- TiO -based composite photocatalyst
ASJC Scopus subject areas
- Physical and Theoretical Chemistry