Issue 43, 2022, Issue in Progress

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.

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

Supplementary files

Article information

Article type
Paper
Submitted
15 Jun 2022
Accepted
17 Sep 2022
First published
29 Sep 2022
This article is Open Access
Creative Commons BY license

RSC Adv., 2022,12, 27809-27819

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

M. Zhang, J. Falvey, A. L. Hector and N. Garcia-Araez, RSC Adv., 2022, 12, 27809 DOI: 10.1039/D2RA03707F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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