Acceleration effect of sulfate ion on the dissolution of amorphous silica

Shuqin Bai, Shinji Urabe, Yoshihiro Okaue, Takushi Yokoyama

研究成果: Contribution to journalArticle査読

23 被引用数 (Scopus)

抄録

The dissolution rate of amorphous silica is enhanced by sulfate ions. The zeta potential for silica particles in Na2SO4 solution was lower than that in NaCl solution with the same ionic strength. These facts indicate that the specific adsorption of sulfate ions occurred by overcoming repulsion between negative charges of the SO2-4 ion and Si{single bond}O- on the surface of silica. The dissolution rate of amorphous silica may be accelerated by the specific adsorption of SO2-4 ions because of a decrease in the strength of the {triple bond, long}Si{single bond}O{single bond}Si{triple bond, long} bond in amorphous silica due to donation of electron density from the adsorbed SO2-4 ions.

本文言語英語
ページ(範囲)551-554
ページ数4
ジャーナルJournal of Colloid And Interface Science
331
2
DOI
出版ステータス出版済み - 3 15 2009

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 生体材料
  • 表面、皮膜および薄膜
  • コロイド化学および表面化学

フィンガープリント

「Acceleration effect of sulfate ion on the dissolution of amorphous silica」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル