Synthesis of crystalline perovskite-structured SrTiO<sub>3</sub> nanoparticles using an alkali hydrothermal process

U. K. N. Din; T. H. T. Aziz; M. M. Salleh; A. A. Umar

doi:10.1007/s12613-016-1217-0

Volume 23 Issue 1

Jan. 2016

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International Journal of Minerals, Metallurgy and Materials > 2016 > 23(1): 109-115. > DOI: 10.1007/s12613-016-1217-0

U. K. N. Din, T. H. T. Aziz, M. M. Salleh, and A. A. Umar, Synthesis of crystalline perovskite-structured SrTiO₃ nanoparticles using an alkali hydrothermal process, Int. J. Miner. Metall. Mater., 23(2016), No. 1, pp.109-115. https://dx.doi.org/10.1007/s12613-016-1217-0

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Synthesis of crystalline perovskite-structured SrTiO₃ nanoparticles using an alkali hydrothermal process

Author Affilications

Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, Bangi, Selangor, 43600, Malaysia

Received: 18 June 2015; Revised: 12 August 2015; Accepted: 31 August 2015; Available Online: 09 June 2021

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Abstract

Abstract

We report an experimental route for synthesizing perovskite-structured strontium titanate (SrTiO₃) nanocubes using an alkali hydrothermal process at low temperatures without further heating. Furthermore, we studied the influence of heating time (at 180℃) on the crystallinity, morphology, and perovskite phase formation of SrTiO₃. The SrTiO₃ powder, which is formed via nanocube agglomeration, transforms into cubic particles with a particle size of 120–150 nm after 6 h of hydrothermal sintering. The crystallinity and percentage of the perovskite phase in the product increased with heating time. The cubic particles contained 31.24at% anatase TiO₂ that originated from the precursor. By varying the weight ratio of anatase TiO₂ used to react with the strontium salt precursor, we reduced the anatase-TiO₂ content to 18.8at%. However, the average particle size increased when the anatase-TiO₂ content decreased.
- strontium titanate,
- nanoparticles,
- anatase,
- hydrothermal synthesis

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