Sensitization of NaMO3 (M: Nb and Ta) Photocatalysts with Wide Band Gaps to Visible Light by Ir Doping

• Akihide Iwase

  Department of Applied Chemistry, Faculty of Science, Tokyo University of Science

• Kenji Saito

  Department of Applied Chemistry, Faculty of Science, Tokyo University of Science

• Akihiko Kudo

  Department of Applied Chemistry, Faculty of Science, Tokyo University of Science

抄録

NiO/NaNbO3 (BG: 3.5 eV) showed photocatalytic activity for water splitting into H2 and O2 under UV irradiation. When NaMO3 (M: Nb and Ta) was codoped with iridium ions and alkaline earth metal ions or lanthanum ions, a new visible-light absorption band was observed in addition to the band gap absorption band of the host material. The codopants of alkaline earth metal and lanthanum ions contributed to maintaining the charge balance and forming of fine crystals of the NaMO3 powder. These NaNbO3 and NaTaO3 codoped with iridium ions and alkaline earth metal ions or lanthanum ions showed photocatalytic activities for H2 or O2 evolution from an aqueous solution containing a sacrificial reagent under visible light irradiation.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 82 (4), 514-518, 2009-04

  Oxford University Press (OUP)

キーワード

• General Chemistry

詳細情報

• CRID: 1360283694082027264
• NII論文ID: 130004152584
• DOI: 10.1246/bcsj.82.514
• ISSN: 13480634
• ISSN: 00092673
• Web Site: https://academic.oup.com/bcsj/article-pdf/82/4/514/56270253/bcsj.82.514.pdf
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