Adsorption and phase transition of alkanol and fluoroalkanol at electrified mercury/aqueous solution interface

Ryo Murakami, Hiroyasu Sakamoto, Yoshiteru Hayami, Hiroki Matsubara, Takanori Takiue, Makoto Aratono

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

The adsorption behavior and the phase transition of alkanol and fluoroalkanol at the electrified mercury/aqueous solution interface were investigated by the interfacial tension measurements and the thermodynamic analysis. In the alkanol system, it is found that the phase transitions in low interfacial densities occur: the ones from the zero adsorption to the gaseous or the expanded state and the gaseous to the expanded state at the electrified interface depending on the electrostatic nature as well as the concentration in the bulk phase. These phase transitions were verified by the thermodynamic equations derived by the assumption of coexistence of two phases at the electrified interface. Furthermore the distribution of ionic species in the interfacial region is discussed on the basis of dependence of the interfacial charge density of solution phase on an applied potential. Fluoroalkanol, on the other hand, was practically not adsorbed at the electrified interface within this experimental condition. The zero adsorption of fluoroalkanol molecules suggests the driving force of the adsorption may be the interaction hydrophobic group of alcohol molecule and mercury.

本文言語英語
ページ(範囲)209-217
ページ数9
ジャーナルJournal of Colloid And Interface Science
295
1
DOI
出版ステータス出版済み - 3 1 2006

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

「Adsorption and phase transition of alkanol and fluoroalkanol at electrified mercury/aqueous solution interface」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