電気化学的に合成したマンガン酸化物の選択的イオン透過性

• 牛戸 美樹

  北海道大学大学院工学研究科分子化学専攻

• 瀬尾 眞浩

  北海道大学大学院工学研究科分子化学専攻

書誌事項

タイトル別名

• Selective Ion Permeability of Manganese Oxides Prepared with an Electrosynthesis
• デンキ カガクテキ ニ ゴウセイ シタ マンガン サンカブツ ノ センタクテキ イオン トウカセイ

抄録

The membrane potentials of γ-MnO₂ and Mn₃O₄, which were electrochemically prepared on Pt mesh, were measured in neutral aqueous solutions of KCl, KNO₃, NaCl and Na₂SO₄ at 25°C to examine the transport numbers of the electrolyte ions in the Mn oxides. In these solutions, the cation transport numbers, t₊, in γ-MnO₂ were 0.62∼0.73, which were larger than those (0.38∼0.51) in the bulk solutions. On the other hand, the anion transport numbers, t_–, in Mn₃O₄ were 0.62∼0.79, which were larger than those (0.49∼0.62) in the bulk solutions. The above results indicated that γ-MnO₂ was cation-selective, whereas Mn₃O₄ was anion-selective. The difference in selective ion permeability between γ-MnO₂ and Mn₃O₄ was explained in terms of the difference in sign of surface electric charge, depending on zero point of charge (zpc) of Mn oxides and pH of the used solutions.

収録刊行物

• Electrochemistry

  Electrochemistry 67 (4), 377-380, 1999-04-05

  公益社団法人　電気化学会

キーワード

• Membrane Potential
• Selective Ion Permeability
• Manganese Dioxide
• Trimanganese Tetraoxide

詳細情報

• CRID: 1390845702323095680
• NII論文ID: 10002566955
• NII書誌ID: AN00151637
• DOI: 10.5796/electrochemistry.67.377
• ISSN: 21862451
• ISSN: 13443542
• NDL書誌ID: 4698530
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4698530
• Web Site: https://www.jstage.jst.go.jp/article/electrochemistry/67/4/67_377/_pdf
• 本文言語コード: ja
• データソース種別:
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  • NDL
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• 抄録ライセンスフラグ: 使用可