Characterization and sinterability of nanophase titania particles processed in flame reactors

Guixiang Yang, Haoren Zhuang, Pratim Biswas

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Flame aerosol reactors are a route for large scale processing of nanostructured materials. However, fundamentals about processing-structure-property relationships have not been extensively researched. This work utilized three different burners to obtain a wide range of flame processing conditions (different time-temperature histories) to study the formation of nanophase titania particles. At low precursor reaction temperatures of about 400°C, amorphous titania was obtained. At intermediate temperatures of 900∼1430°C, mixtures of anatase and rutile phase titania were obtained. At high temperatures of 1500∼157°C, spherical particles of 100% anatase titania were obtained. A qualitative explanation of the different phase formation has been provided. Transmission Electron Microscopy was used to study particle morphology, size and agglomeration. Sizes of the titania particles produced by the designed burners varied from 10 to 100 nm, depending on processing conditions. In situ light scattering measurements were made to examine the evolution of the particle sizes. Post-sintering experiments were carried out to illustrate superior sinterability of the nanophase titania powders.

Original languageEnglish (US)
Pages (from-to)675-689
Number of pages15
JournalNanostructured Materials
Volume7
Issue number6
DOIs
StatePublished - Aug 1996
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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