Inderscience Publishers

Synthesis and photocatalytic activity of Sr
4
Al
14
O
25
:(Eu, Dy)/TiO
0

Sr4Al14O25:(Eu, Dy)/TiO2-xNy composites were synthesised via the solvothermal reaction followed by the mild ball–milling, and the photocatalytic activities were evaluated for deNOx ability both under artificial solar irradiation with 69.3 W/m² and after turning off the light. It was confirmed that TiO2-xNy nanoparticles with rutile phase could be uniformly dispersed on the surface of Sr4Al14O25:(Eu, Dy). The improvement of photocatalytic deNOx ability of TiO2-xNy, together with the persistent photocatalytic activity for the decomposition of NO gas after turning off the light was realised.

Keywords: photocatalytic activity, deNOx, persistent decomposition, visible light induction, titanium dioxide, nitrogen–doped, long afterglow phosphor, blue fluorescence, artificial solar irradiation, darkness, air purification, composites, nanoparticles, nanotechnology

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4
Al
14
O
25
:(Eu, Dy)/TiO