Hydrothermal synthesis of polymorphic titania and their structural evolution from potassium titanate whisker

Ming He, Xiao Li Gu, Zhen Yang Luo, Xiao Hua Lu, Xin Feng

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The hydrothermal synthesis of polymorphic titania crystals and their structural evolution from potassium titanates, K2Ti6O13, K2Ti4O9 and K2Ti8O17 whiskers, were studied systematically. Dispersed, regular twinning rutile TiO2 was firstly generated by hydrothermally treating K2Ti6O13 whisker in an acid medium. The crystal phase and morphologies varied with different reaction temperatures and time in diverse mediums were investigated using XRD, SEM and TEM. The results indicate that the weak-binding crystallographic planes are the key factors of the crystal transformation in the hydrothermal system. The transformation from K2Ti6O13 to the twinning rutile is achieved via rearranging structural units on the {100} or {201} plane.

Original languageEnglish
Pages (from-to)662-668
Number of pages7
JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
Volume23
Issue number4
DOIs
StatePublished - Jul 2008

Keywords

  • Hydrothermal
  • Potassium titanates whisker
  • Structural evolution
  • Titania

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