Low temperature synthesis of titania nanocrystal and its visible light response photocatalytic activity

Shu Yin, Jin Shu Wang, Tsugio Sato

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Titania nanocrystals were prepared by a low temperature process in liquid media. The crystallization of amorphous precursor could proceed at low temperature around room temperature. The thermodynamically stable rutile formed at low temperature below 70°C, while the metastable anatase formed at higher temperature. The phase composition, microstructure, morphology, and specific surface area of titania changed significantly depending on the reprecipitation temperatures. Well-crystallized needle-like rutile titania crystals with high specific surface areas possessed higher photocatalytic activities than those of anatase crystals under visible light irradiation of wavelength >400 nm and /or >510 nm.

Original languageEnglish
Pages (from-to)2503-2506
Number of pages4
JournalGongneng Cailiao/Journal of Functional Materials
Volume35
Issue numberSUPPL.
Publication statusPublished - 2004 Sep 1

Keywords

  • Low-temperature synthesis
  • Photocatalyst
  • Titania nanocrystal
  • Visible light response activities

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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