DeNO_x Photocatalytic Activity under Visible LED Light Irradiation over Nitrogen-doped Titania Particles with Iron or Platnium Loading

Abstract

The photocatalytic deNO_x activities of titania, nitrogen-doped titania, Fe loaded nitrogen-doped titania and Pt loaded nitrogen-doped titania under irradiation from monochrome LED lamps using various light wavelengths were investigated in details. The improvement of visible light induced photocatalytic activity was successfully realized using Fe and Pt loading. Both iron loaded nitrogen-doped titania and platinum loaded nitrogen-doped titania showed excellent visible light response ability. The photocatalytic activity exhibited by platinum loaded nitrogen-doped titania was several times higher than that of nitrogen-doped titania under the visible-light irradiation of wavelength = 627 nm and 530 nm. The relationship between photocatalytic activity and irradiation light wavelength was investigated in detail.