Low temperature synthesis of nanosize rutile titania crystal in liquid media

Shu Yin, Ruixing Li, Qinglin He, Tsugio Sato

Research output: Contribution to journalConference articlepeer-review

68 Citations (Scopus)

Abstract

Titania powders consisting of well-crystallized nanosize rutile phase (ca. 20-50nm) were prepared by the "low temperature dissolution-reprecipitation process" (LTDRP) in liquid media. The crystallization of amorphous precursor was carried out at a low temperature around room temperature. The crystallization temperature was about 385 and 110°C lower than those by calcination in air (407°C) and hydrothermal reaction (130°C), respectively. The phase constitution of powders from LTDRP was identified by XRD and Raman analyses. The titania powders prepared by LTDRP possessed a high specific surface area of 135.0m2g-1, which was about two times greater than that prepared by hydrothermal method. The phase composition, microstructure, morphology, agglomerate state and specific surface area of titania changed significantly, depending on the pH value, type of solvent and coexisting ion, etc. in the solution. The photocatalytic activity of crystalline titania was characterized.

Original languageEnglish
Pages (from-to)76-80
Number of pages5
JournalMaterials Chemistry and Physics
Volume75
Issue number1-3
DOIs
Publication statusPublished - 2002 Apr 28
EventICMAT 2001 Symposium C (Novel and Advanced Ceramics) - Singapore, Singapore
Duration: 2002 Apr 28 → …

Keywords

  • Dissolution-reprecipitation process
  • Low temperature solution reaction
  • Photocatalyst
  • Titania

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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