Preparation of atomically smooth TiO2 single crystal surfaces and their photochemical property

Yuichi Yamamoto, Kazuko Nakajima, Takeo Ohsawa, Yuji Matsumoto, Hideomi Koinuma

研究成果: Article査読

87 被引用数 (Scopus)

抄録

Atomically smooth rutile TiO2(110), (100), (001), (111) and (101) surfaces were obtained for the first time by an appropriate cleaning and subsequent thermal treatment of commercially available single crystals. The annealing temperature for obtaining the ultra-smooth surface varied between 400 and 900°C depending on the crystallographic planes. The key point to the successful preparation of the regularly stepped TiO2 surface was an HF treatment for the removal of surface impurities. By using these well-defined TiO2 surfaces, the photochemical property was found to depend on the surface orientation; the photo-reduction of Ag+ to Ag metal from an aqueous solution proceeded in the order of (101) > (100) > (001) > (111) > (110) on the TiO2 surfaces.

本文言語English
ページ(範囲)L511-L514
ジャーナルJapanese Journal of Applied Physics, Part 2: Letters
44
16-19
DOI
出版ステータスPublished - 2005 12月 1
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(その他)
  • 物理学および天文学(全般)

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