Preparation of porous anatase coating from sol-gel-derived titanium dioxide and titanium dioxide-silica by water-vapor exposure

Hiroaki Imai, Hiroshi Hirashima

研究成果: Article査読

65 被引用数 (Scopus)

抄録

The effects of water vapor on the crystallization behavior of sol-gel-derived titanium dioxide (TiO2) thin films that contained 0-50 mol% silica (SiO2) were investigated. Anatase formed on exposure to water vapor at 60°-180°C, with a simultaneous decrease in the concentration of OH groups. An increase in the SiO2 content of the exposed films led to an increase in the average crystalline size. Because crystallization of the exposed films of the films was not accompanied by shrinkage, porous anatase coatings were obtained via exposure at a relatively low temperature. Phase separation of the immiscible TiO2-SiO2 system was induced with water vapor, which resulted in acceleration of the crystallization of the sol-gel films.

本文言語English
ページ(範囲)2301-2304
ページ数4
ジャーナルJournal of the American Ceramic Society
82
9
DOI
出版ステータスPublished - 1999

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料化学

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