Preparations and Photocatalytic Properties of Visible-Light-Active Nitrogen-Doped TiO2

A visible-light-active N-TiO2 photocatalyst was prepared by a simple method: TiN nanoparticles were calcined in the O2/N2 atmosphere. The prepared N-TiO2 shows high photocatalytic activity for the degradation of methyl orange in water under visible light irradiation. The photodegradation results indicate that the prepared photocatalysts have the best photocatalytic activity when TiN was calcined at 650 °C for 15 min in the O2/N2 atmosphere with 1:15 (volume) of O2/N2.

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