Crystal phase control for titanium dioxide films by direct deposition in aqueous solutions

Satoshi Yamabi, Hiroaki Imai

研究成果: Article査読

184 被引用数 (Scopus)

抄録

Crystalline titanium dioxide (TiO2) was directly grown on a substrate via heterogeneous nucleation in aqueous solutions with titanyl sulfate at near room temperature. The crystal phase of TiO2 films was essentially determined by the initial pH value and the Ti concentration of the precursor solutions. The rutile and anatase phases were produced in the solutions around their thermodynamic equilibrium conditions between Ti(IV) ionic species and the solid phases. The effect of the deposition rate on the crystal phases was not dominant in this system. On the other hand, the morphology of the TiO2 products was influenced by the reaction rate controlled with the properties of anions as a ligand for titanium cations. Homogeneous rutile and anatase films consisting of highly oriented needlelike crystals were obtained with a relatively slow deposition rate.

本文言語English
ページ(範囲)609-614
ページ数6
ジャーナルChemistry of Materials
14
2
DOI
出版ステータスPublished - 2002 3月 19

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 材料化学

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