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Effects of the reaction temperature and Ba/Ti precursor ratio on the crystallite size of BaTiO₃ in hydrothermal synthesis.

ABSTRACT: Nanocrystalline BaTiO₃ has been prepared by hydrothermal synthesis from titanium isopropoxide and barium hydroxide octahydrate. Reaction conditions including synthesis temperature and Ba/Ti precursor ratio have been explored with the aim of producing BaTiO₃ with small crystallites and a low concentration of defects. It has been found that the crystallite/particle size and tetragonality of the BaTiO₃ samples increase as the synthesis temperature increases; and the crystallite/particle size of BaTiO₃ is also affected by the Ba/Ti precursor ratio. The BaTiO₃ sample synthesised using a Ba/Ti precursor ratio of 2 : 1 at a reaction temperature of 120 °C exhibited homogeneous crystallites of the smallest size of 107 nm. Additionally, the Ba/Ti precursor ratio of 2 : 1 with synthesis temperature of 220 °C was found to produce a smaller concentration of defects in BaTiO₃.

SUBMITTER: Zhang M

PROVIDER: S-EPMC9520380 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature

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Effects of the reaction temperature and Ba/Ti precursor ratio on the crystallite size of BaTiO3 in hydrothermal synthesis.

Zhang Min M Falvey Joseph J Hector Andrew L AL Garcia-Araez Nuria N

RSC advances 20220929 43

Nanocrystalline BaTiO3 has been prepared by hydrothermal synthesis from titanium isopropoxide and barium hydroxide octahydrate. Reaction conditions including synthesis temperature and Ba/Ti precursor ratio have been explored with the aim of producing BaTiO3 with small crystallites and a low concentration of defects. It has been found that the crystallite/particle size and tetragonality of the BaTiO3 samples increase as the synthesis temperature increases; and the ...[more]

PMID: 36320257

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Dataset Information

Effects of the reaction temperature and Ba/Ti precursor ratio on the crystallite size of BaTiO₃ in hydrothermal synthesis.

Publications

Effects of the reaction temperature and Ba/Ti precursor ratio on the crystallite size of BaTiO<sub>3</sub> in hydrothermal synthesis.

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