Construction of Spatial Charge Separation Facets on BaTaO2N Crystals by Flux Growth Approach for Visible-Light-Driven H2 Production

Ying Luo, Sayaka Suzuki, Zheng Wang, Kunio Yubuta, Junie Jhon M. Vequizo, Akira Yamakata, Hiromasa Shiiba, Takashi Hisatomi, Kazunari Domen, Katsuya Teshima

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Low charge separation efficiencies are regarded as obstacles that limit the improvement in the photocatalytic performance of BaTaO2N. In this study, we demonstrated that the anisotropic facets ({100} and {110} facets) of BaTaO2N for efficient spatial charge separation were successfully constructed using the one-pot flux-assisted nitridation approach. As a result, the photocatalytic activity for H2 production on BaTaO2N with coexposed {100} and {110} facets was nearly 10-fold over that of BaTaO2N with only {100} facets and that of the conventional irregularly shaped sample. This finding provides an innovative approach to the development of efficient (oxy)nitride photocatalysts for solar energy conversion.

Original languageEnglish
JournalACS Applied Materials and Interfaces
DOIs
Publication statusPublished - 2019 Jan 1

Keywords

  • (oxy)nitride photocatalyst
  • anisotropic facet
  • charge separation
  • flux method
  • photocatalytic activity

ASJC Scopus subject areas

  • Materials Science(all)

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