Ce0.3Zr0.7O1.88N0.12 solid solution as a stable photocatalyst for visible light driven water splitting

Yu Lei Wang, Jia Min Jin, Yu Hang Li, Xue Lu Wang, Bo Zhang, Xiwen Gong, Hai Feng Wang, Ai Ping Chen, Li Rong Zheng, P. Hu, Hua Gui Yang*

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The search of efficient and stable photocatalysts for the evolution of hydrogen from water using solar energy is of great importance for material science today. Limited by the relatively inferior stability of oxynitrides, the availability of these visible-light-response materials in photocatalysis is still far below what is expected. Here we report a novel oxynitride Ce0.3Zr0.7O1.88N0.12 as an efficient and stable H2-evolving photocatalyst under visible light irradiation, which can further enable overall water splitting by coupling with an O2-evolving photocatalyst via Z-scheme. Experimental and theoretical results together reveal that the origin of the excellent activity and stability of Ce0.3Zr0.7O1.88N0.12 photocatalyst can be attributed to the improved separation rate of photoexcited charge carriers by surface and sub-surface oxygen vacancies. The present study provides a strategy to engineer efficient and stable photocatalysts, and the oxynitride mentioned above could act as a promising candidate of H2-evolving photocatalyst for designing a prominent Z-scheme photocatalytic system.

Original languageEnglish
Pages (from-to)733-739
Number of pages7
JournalApplied Catalysis B: Environmental
Volume224
DOIs
Publication statusPublished - 01 May 2018

Keywords

  • CeZrON
  • Hydrogen evolution
  • Photocatalysis
  • Stability
  • Z-scheme

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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    Wang, Y. L., Jin, J. M., Li, Y. H., Wang, X. L., Zhang, B., Gong, X., Wang, H. F., Chen, A. P., Zheng, L. R., Hu, P., & Yang, H. G. (2018). Ce0.3Zr0.7O1.88N0.12 solid solution as a stable photocatalyst for visible light driven water splitting. Applied Catalysis B: Environmental, 224, 733-739. https://doi.org/10.1016/j.apcatb.2017.11.012