High-entropy oxynitride as a low-bandgap and stable photocatalyst for hydrogen production

Parisa Edalati, Xiao Feng Shen, Motonori Watanabe, Tatsumi Ishihara, Makoto Arita, Masayoshi Fuji, Kaveh Edalati

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)


Metal oxynitrides are promising photocatalysts due to their narrow bandgap, but their lower stability compared to metal oxides is a drawback. The introduction of high-entropy alloys with entropy-stabilization features has shown high potential for various functional applications in recent years. By considering these two types of materials, we developed a high-entropy oxynitride for photocatalytic water splitting. The material, with a general composition of TiZrHfNbTaO6N3and a d0electronic configuration, showed a narrow bandgap of 1.6 eV, which is much lower than the bandgaps of relevant binary and high-entropy oxides. The material exhibited photocurrent generation and photocatalytic hydrogen production with high chemical stability, suggesting the high potential of high-entropy oxynitrides as advanced low-bandgap and stable photocatalysts.

ジャーナルJournal of Materials Chemistry A
出版ステータス出版済み - 7 14 2021

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 再生可能エネルギー、持続可能性、環境
  • 材料科学(全般)


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