Hydrothermal synthesis of BaTiO 3 nanopowders using TiO 2 nanoparticles

Jae Min Han, Mi Ri Joung, Jin Seong Kim, Youn Seon Lee, Sahn Nahm, Youn Kyu Choi, Jong Hoo Paik

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Anatase TiO2 nanoparticles, obtained by hydrolyzing titanium isopropoxide in distilled water, were used to synthesize BaTiO3 (BT) nanopowder by the hydrothermal method. When titanium isopropoxide was used, BT nanopowder with a low tetragonality of 1.0070 was formed because of the presence of OH- ions in the oxygen sites and Ba vacancies. However, by changing the titanium source from titanium isopropoxide to TiO2 nanoparticles, a homogeneous BT nanopowder with similar particle size and a high tetragonality of 1.0081 was synthesized. The size of the BT nanopowder particles was decreased by reducing the synthesis time. In particular, the BT nanopowder that was synthesized at 220°C for 16 h with a Ba/Ti molar ratio of 4.0 exhibited a high tetragonality of 1.0083 and a small particle size of 126.0 nm.

Original languageEnglish
Pages (from-to)346-349
Number of pages4
JournalJournal of the American Ceramic Society
Volume97
Issue number2
DOIs
Publication statusPublished - 2014 Feb

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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    Han, J. M., Joung, M. R., Kim, J. S., Lee, Y. S., Nahm, S., Choi, Y. K., & Paik, J. H. (2014). Hydrothermal synthesis of BaTiO 3 nanopowders using TiO 2 nanoparticles. Journal of the American Ceramic Society, 97(2), 346-349. https://doi.org/10.1111/jace.12755