Proton conduction properties of hydrous sulfated nano-titania synthesized by hydrolysis of titanyl sulfate

Takaaki Sakai, Satoshi Kajitani, Seok Jun Kim, Jun Ichi Hamagami, Hiroyuki Oda, Maki Matsuka, Hiroshige Matsumoto, Tatsumi Ishihara

研究成果: Contribution to journalArticle

20 引用 (Scopus)

抜粋

We investigated the electrical conductivity and electrochemical properties of hydrous sulfated nano-titania. The conductivity reached 0.1 S cm - 1 at 50 °C under a relative humidity of 80%. Diffuse reflectance FT-IR spectra suggest that bidentate sulfate coordination likely forms on the nano-titania surface, which in turn contributes to the electrical conduction. The conductivity depended on relative humidity. Using a hydrogen concentration cell, we found that the electromotive force (EMF) of the nano-titania was almost the same as the theoretical value. These results suggest that the main conduction mechanism is proton conduction on the surface of the titania nanoparticles with the aid of sulfonic acid groups bound to the surface of the oxide.

元の言語英語
ページ(範囲)1746-1749
ページ数4
ジャーナルSolid State Ionics
181
発行部数39-40
DOI
出版物ステータス出版済み - 12 20 2010

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

フィンガープリント Proton conduction properties of hydrous sulfated nano-titania synthesized by hydrolysis of titanyl sulfate' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用