Effect of silica addition on phase transformation characteristics of heat-treated combustion-synthesized TiO2 nanoparticles

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Abstract

In this article, the effect of silica addition on the phase transformation characteristics of TiO2 nanoparticles synthesized by using an O 2-enriched coflow, hydrogen, diffusion flame was investigated. TTIP(titanium tetra-isopropoxide) and TEOS(tetraethyl-orthosilicate) were used as precursors for TiO2 and SiO2 nanoparticles, respectively. Based on the results from TEM and XRD analysis, it is believed that the silica addition on the flame synthesis of TiO2 nanoparticles reduces the particle size distribution and raises the temperature of the phase transition from anatase to rutile. But the reduced sizes of the synthesized particles due to the silica addition made the sintering and phase transformation of particles more easily.

Original languageEnglish
Pages (from-to)186-193
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, B
Volume33
Issue number3
DOIs
StatePublished - 2009.03

Keywords

  • Combution synthesis
  • Heat treatment
  • Phase transformation

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