Microwave-hydrothermal process for the synthesis of rutile

Sara Baldassari, Sridhar Komarneni, Emilia Mariani, Carla Villa

Research output: Contribution to journalArticle

54 Scopus citations

Abstract

The synthesis of pure rutile titanium dioxide is not an easy achievement, as the crystallization process generally leads to mixtures of two or even three phases; moreover the synthetic processes normally used by industry require harsh reaction conditions. We carried out the synthesis of titanium dioxide from an aqueous titanium tetrachloride solution under microwave irradiation in the reaction time range of 5-120 min. We mostly obtained mixtures of rutile and anatase, but obtained single-phase rutile after a 2-h treatment at 160°C; transmission electron micrographs revealed well-dispersed spherical nanoparticles. We also investigated the effects of dilution and addition of a dispersant (polyvinylpyrrolidone) on phase crystallization and particle shape.

Original languageEnglish (US)
Pages (from-to)2014-2020
Number of pages7
JournalMaterials Research Bulletin
Volume40
Issue number11
DOIs
StatePublished - Nov 3 2005

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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