Substitution Effects of the Trivalent Cations M〔3+〕 on the Photophysical and Photocatalytic Properties of In12NiM2Ti10O42 (M=Al,Cr,Ga)

• Wang Defa

  Ecomaterials Center, National Institute for Materials Science (NIMS) Precursory Research for Embryonic Science and Technology (PREST), Japan Science and Technology Agency (JST)

• Ye Jinhua

  Ecomaterials Center, National Institute for Materials Science (NIMS) Precursory Research for Embryonic Science and Technology (PREST), Japan Science and Technology Agency (JST)

書誌事項

タイトル別名

• Substitution Effects of the Trivalent Cations M<SUP>3+</SUP> on the Photophysical and Photocatalytic Properties of In<SUB>12</SUB>NiM<SUB>2</SUB>Ti<SUB>10</SUB>O<SUB>42</SUB> (M = Al, Cr, Ga)
• Substitution Effects of the Trivalent Cations M 3 on the Photophysical and Photocatalytic Properties of In12NiM2Ti10O42 M Al Cr Ga

抄録

A new series of visible-light-driven photocatalysts In₁₂NiM₂Ti₁₀O₄₂ (M = Al, Cr, Ga) with a pyrochlore-related layered structure were synthesized by the conventional solid-state reaction method. The substitution effects of trivalent cations M³⁺ on the electronic structure, photophysical and photocatalytic properties were investigated. It was found that although the three materials were all crystallized in a monoclinic symmetry with the same space group P2₁/a, their photocatalytic activities of H₂ evolution were quite different. In comparison with In₁₂NiAl₂Ti₁₀O₄₂ and In₁₂NiGa₂Ti₁₀O₄₂, In₁₂NiCr₂Ti₁₀O₄₂ showed the narrowest band gap and highest activity, which could be ascribed to the formation of broadly dispersed continuous conduction and valence bands due to the involvement of partially filled Cr 3d orbitals in addition to Ni 3d orbitals. The present study suggests a promising method for developing visible-light-driven photocatalysts with tailored properties via transition-metal(s)-mediated band structure engineering.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 46 (12), 2699-2703, 2005

  公益社団法人 日本金属学会

キーワード

• In<SUB>12</SUB>NiM<SUB>2</SUB>Ti<SUB>10</SUB>O<SUB>42</SUB> (M = Al
• Cr
• Ga)
• substitution
• electronic structure
• electronic state
• ionic radius
• visible light
• photocatalytic H<SUB>2</SUB> evolution

詳細情報

• CRID: 1390282679227235072
• NII論文ID: 130004452694
• NII論文ID: 10017149576
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.46.2699
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 7757611
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7757611
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/46/12/46_12_2699/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可