分相性ポーラスガラス内表面吸着水の電気伝導挙動

書誌事項

タイトル別名
  • Electric Conduction Behavior of Adsorbed Water in Inner Surface of the Phase-Separating Porous Glasses
  • フン アイショウ ポーラスガラス ナイ ヒョウメン キュウチャクスイ ノ デンキ デンドウ キョドウ

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抄録

Porous glass made by phase separation shows large surface area due to the jungle gym structure and high chemical activity due to silanol groups. We performed electrochemical and gravimetric characterization of the adsorbed water in inner surface of porous glass under controlled humidity. Cyclic voltammograms obtained were explained in terms of the electrical resistance of adsorbed water containing H3O+ attributed to silanols and electrochemical reactions at the surface of sputter-deposited Au electrodes. The resistivity at relative humidity of 77% was ca. 104 Ω which was estimated to be 104–108 times smaller than that of silica glass slides. This result corresponds well to the conclusions from surface area value calculated from pore size measurement and gravimetry of adsorbed water.

収録刊行物

  • Electrochemistry

    Electrochemistry 80 (9), 632-635, 2012

    公益社団法人 電気化学会

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