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Synthesis of Barium Titanate Nanocubes using Hydrothermal Method
Wong Kin Fung
Supervisor: Dr. Lee Oon Jew
Bachelor of Applied Science (Electronics and Instrumentation Physics)
School of Ocean Engineering
BaTiO3 is oxide material with perovskite structure which exhibits high dielectric
constant. In this work, BaTiO3 cubes have been synthesized via hydrothermal
synthesis method with Titanium (IV) bis(ammonium lactate) dihydroxide (TALH)
solution and Barium hydroxide as the Ti and Ba precursors at temperature as low as
210°C. Oleic acid and tert-butylamine are the surfactants used to control the shape,
morphology and the size of the BaTiO3 to retain in cube. The X-Ray Diffraction patterns
indicate that the formation of single phase of BaTiO3 after undergo calcination at
elevated temperature. All the organic function groups originated TALH and surfactants
are vanished as determined from the Fourier Transform Infrared Spectrometer. The
dielectric constant at room temperature and at 1kHz is 579.15 for BaTiO3 (1:18:18).
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