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Enhanced size uniformity and dispersibility of BaTiO3 nanoparticles by hydrothermal synthesis

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2020, 30(3), pp.91-95
  • DOI : 10.6111/JKCGCT.2020.30.3.091
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : April 8, 2020
  • Accepted : April 16, 2020
  • Published : June 30, 2020

Cho Hoyeon 1 Park Byoung Nam 1

1홍익대학교

Accredited

ABSTRACT

In this study, we report a hydrothermal synthesis in which BaTiO3 nanoparticles (NPs) with enhanced size uniformity and dispersibility are synthesized by increased time and temperature, increasing nucleation and diffusion rates. The formation process of an uniform size of 20 nm BaTiO3 NPs, which has not been extensively researched, was optimized through hydrothermal synthesis at 180°C. Simultaneous increase in the nucleation rate of TiO2 and diffusion length of Ba2+ ions, resulting from a higher temperature, allowed for the synthesis of BaTiO3 NPs (20 nm) with significantly enhanced size-uniformity. The size and crystallinity of BaTiO3 NPs which exhibit excellent dispersibility in hexane solvent were investigated using transmission electron microscopy and X-ray diffraction. The results presented herein provide insights into improving the size uniformity and dispersibility of BaTiO3 NPs by hydrothermal synthesis for applications to variety of electronic devices.

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