Preparing titanium oxide with various morphologies

Yung Fang Chen, Chi Young Lee, Ming Yu Yeng, Hsin-Tien Chiu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

Titanium oxide powder was prepared by hydrolyzing titanium tetraisopropoxide (TTIP) in aqueous solutions at pH 2, using TMC and NP-204 as surfactants. The anatase phase was formed when the precipitants were dried at 373 K. When the calcination temperature was below 773 K, all the powders were crystalline in the anatase phase. The powders changed to the rutile phase when the calcination temperature exceeded 1173 K. The powder calcined at 673 K has spherical primary particles with diameters of approximately 8 nm. When the powders calcined at 673 K were heated in NaOH solutions of various concentrations at 423 K for 20 h, titanium oxide powders with different morphologies were obtained. After the powders were refluxed in 5M NaOH solutions, flower-like titanium oxide particles were formed. Nanotubes of titanium oxide about 8 nm in diameter and over 600 nm long were obtained when the powders were refluxed in 10M NaOH solution.

Original languageEnglish
Pages (from-to)39-44
Number of pages6
JournalMaterials Chemistry and Physics
Volume81
Issue number1
DOIs
StatePublished - 20 Jul 2003

Keywords

  • Microstructure
  • Nanomaterials
  • Nanotubes
  • Titanium oxide

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