J. Mater. Sci. Technol. ›› 2018, Vol. 34 ›› Issue (6): 969-975.DOI: 10.1016/j.jmst.2017.06.010

Special Issue: Nanomaterials 2018

• Orginal Article • Previous Articles     Next Articles

TiO2-based photocatalysts prepared by oxidation of TiN nanoparticles and their photocatalytic activities under visible light illumination

Chao Liab, Weiyi Yanga, Qi Lia*()   

  1. aEnvironment Functional Materials Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    bUniversity of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-03-25 Revised:2017-04-21 Accepted:2017-06-12 Online:2018-06-10 Published:2018-06-05
  • Contact: Li Qi

Abstract:

To develop TiO2-based photocatalysts with visible light activity for better solar energy utilization, a simple flash oxidation method was developed by calcining commercial TiN nanoparticle to prepare N-doped TiO2 photocatalyst and TiN/TiO2 composite photocatalysts through the modulation of the calcination time and temperature. It was found that more energy and processing time were needed to prepare N-doped TiO2 photocatalyst than that of TiN/TiO2 composite photocatalyst during this process, while TiN/TiO2 composite photocatalyst had a better visible light absorption/photocatalytic performance than that of N-doped TiO2 photocatalyst prepared from the oxidation of the same TiN precursor. Thus, the preparation of TiN/TiO2 composite photocatalyst from TiN precursor should be a more preferred approach than the preparation of N-doped TiO2 photocatalyst for visible-light-activated photocatalysis for its cost-effectiveness.

Key words: N-doped TiO2, TiN/TiO2, Localized surface plasmon resonance (LSPR), Visible-light-activated photocatalysis