Photocatalytic Preparation of Cuprous Oxide Crystals Using a TiO_2 Catalyst

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Reddish cuprous oxide crystals can be readily formed by irradiating an aqueous alkaline Cu(II) solution containing suitable complexing agents with UV or sunlight in the presence of a photocatalyst such as TiO<SUB>2</SUB> or ZnO . Various factors, including the Cu(II) concentration, pH of the Cu(II) solution, amount of TiO<SUB>2</SUB> catalyst, method used to agitate the test suspension, concentration of potassium sodium tartarate, and intensity of UV radiation, affecting cuprous oxide preparations were investigated. Concentrations of Cu(II) and potassium sodium tartarate have no significant effect on reaction rates, while pH, and amount of TiO<SUB>2</SUB>, play important roles in the reaction. The dispersion of TiO<SUB>2</SUB> in Cu(II) solution is another important factor. Cu(II) reduction rate is not affected as far as the amount of reduced Cu(II) plotted against the cumulative intensity of UV radiation is concerned. It is necessary to stop the cuprous oxide formation before the complete reduction of Cu(II), since metallic copper is formed on cuprous oxide.

収録刊行物

  • Materials transactions

    Materials transactions 43(12), 3247-3253, 2002-12-01

    公益社団法人 日本金属学会

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各種コード

  • NII論文ID(NAID)
    10012329689
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    6395745
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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