Alkali Metal Chloride Flux Growth of Ilmenite-Type ZnTiO3 and Subsequent Nitrogen Doping for Visible-Light-Driven Water Oxidation Catalysis

Hajime Wagata, Kenta Sakakibara, Kenta Kawashima, Mirabbos Hojamberdiev, Kunio Yubuta, Katsuya Teshima

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

The polyhedral-shaped ilmenite-type ZnTiO3 crystals with well-developed facets were grown from alkali metal chloride fluxes (ACl, A = Li, Na, K, Rb, and Cs). NaCl and CsCl were observed to be the most suitable fluxes for growing ilmenite-type ZnTiO3 crystals without impurity phases. Doping nitrogen into the crystals was achieved via heating under the continuous flow of ammonia gas (NH3). The resulting crystals exhibited enhanced photon harvesting capacity while still maintaining their original crystal phase (i.e., ZnTiO3). The introduction of nitrogen into the lattice was confirmed through analytical techniques used for investigating the surface chemical states and bulk chemical compositions. The N-doped ZnTiO3 served as a competent photocatalyst for water oxidations in AgNO3 aqueous solutions under visible light irradiation.

本文言語英語
ページ(範囲)7762-7771
ページ数10
ジャーナルACS Applied Energy Materials
2
11
DOI
出版ステータス出版済み - 11 25 2019
外部発表はい

All Science Journal Classification (ASJC) codes

  • 化学工学(その他)
  • エネルギー工学および電力技術
  • 電気化学
  • 材料化学
  • 電子工学および電気工学

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