Size Controllable Synthesis of Barium Titanate Nanoparticles by Hydrothermal Method using Supercritical Water
- Size Controllable Synthesis of Barium Titanate Nanoparticles by Hydrothermal Method using Supercritical Water
- 안기호; 이영호; 김재훈; 이윤우
- Supercritical Water; Barium Titanate
- Issue Date
- In this study, barium titanate nanoparticles were synthesized by hydrothermal method using supercritical water. Ba(OH)2 and TiO2 were used as precursors, and the reactions were carried out at 400 ℃ and 300 bar. Size of synthesized particles was slightly larger than that of titanium dioxide, and the size of titanium dioxide affected the size of barium titanate particles and the purity of the product. For large TiO2 particles (100 nm), the use of only Ba(OH)2 could not lead to the formation of pure BaTiO3, while the smaller TiO2 particles (25 nm) was completely coverted to BaTiO3.
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