Hydrothermal synthesis of BaTiO 3 nanopowders using TiO 2 nanoparticles

Jae Min Han; Mi Ri Joung; Jin Seong Kim; Youn Seon Lee; Sahn Nahm; Youn Kyu Choi; Jong Hoo Paik

doi:10.1111/jace.12755

Hydrothermal synthesis of BaTiO ₃ nanopowders using TiO ₂ nanoparticles

Jae Min Han, Mi Ri Joung, Jin Seong Kim, Youn Seon Lee, Sahn Nahm, Youn Kyu Choi, Jong Hoo Paik

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

Anatase TiO₂ nanoparticles, obtained by hydrolyzing titanium isopropoxide in distilled water, were used to synthesize BaTiO₃ (BT) nanopowder by the hydrothermal method. When titanium isopropoxide was used, BT nanopowder with a low tetragonality of 1.0070 was formed because of the presence of OH^- ions in the oxygen sites and Ba vacancies. However, by changing the titanium source from titanium isopropoxide to TiO₂ nanoparticles, a homogeneous BT nanopowder with similar particle size and a high tetragonality of 1.0081 was synthesized. The size of the BT nanopowder particles was decreased by reducing the synthesis time. In particular, the BT nanopowder that was synthesized at 220°C for 16 h with a Ba/Ti molar ratio of 4.0 exhibited a high tetragonality of 1.0083 and a small particle size of 126.0 nm.

Original language	English
Pages (from-to)	346-349
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	97
Issue number	2
DOIs	https://doi.org/10.1111/jace.12755
Publication status	Published - 2014 Feb

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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title = "Hydrothermal synthesis of BaTiO 3 nanopowders using TiO 2 nanoparticles",

abstract = "Anatase TiO2 nanoparticles, obtained by hydrolyzing titanium isopropoxide in distilled water, were used to synthesize BaTiO3 (BT) nanopowder by the hydrothermal method. When titanium isopropoxide was used, BT nanopowder with a low tetragonality of 1.0070 was formed because of the presence of OH- ions in the oxygen sites and Ba vacancies. However, by changing the titanium source from titanium isopropoxide to TiO2 nanoparticles, a homogeneous BT nanopowder with similar particle size and a high tetragonality of 1.0081 was synthesized. The size of the BT nanopowder particles was decreased by reducing the synthesis time. In particular, the BT nanopowder that was synthesized at 220°C for 16 h with a Ba/Ti molar ratio of 4.0 exhibited a high tetragonality of 1.0083 and a small particle size of 126.0 nm.",

author = "Han, {Jae Min} and Joung, {Mi Ri} and Kim, {Jin Seong} and Lee, {Youn Seon} and Sahn Nahm and Choi, {Youn Kyu} and Paik, {Jong Hoo}",

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AU - Han, Jae Min

AU - Joung, Mi Ri

AU - Kim, Jin Seong

AU - Lee, Youn Seon

AU - Nahm, Sahn

AU - Choi, Youn Kyu

AU - Paik, Jong Hoo

PY - 2014/2

Y1 - 2014/2

N2 - Anatase TiO2 nanoparticles, obtained by hydrolyzing titanium isopropoxide in distilled water, were used to synthesize BaTiO3 (BT) nanopowder by the hydrothermal method. When titanium isopropoxide was used, BT nanopowder with a low tetragonality of 1.0070 was formed because of the presence of OH- ions in the oxygen sites and Ba vacancies. However, by changing the titanium source from titanium isopropoxide to TiO2 nanoparticles, a homogeneous BT nanopowder with similar particle size and a high tetragonality of 1.0081 was synthesized. The size of the BT nanopowder particles was decreased by reducing the synthesis time. In particular, the BT nanopowder that was synthesized at 220°C for 16 h with a Ba/Ti molar ratio of 4.0 exhibited a high tetragonality of 1.0083 and a small particle size of 126.0 nm.

AB - Anatase TiO2 nanoparticles, obtained by hydrolyzing titanium isopropoxide in distilled water, were used to synthesize BaTiO3 (BT) nanopowder by the hydrothermal method. When titanium isopropoxide was used, BT nanopowder with a low tetragonality of 1.0070 was formed because of the presence of OH- ions in the oxygen sites and Ba vacancies. However, by changing the titanium source from titanium isopropoxide to TiO2 nanoparticles, a homogeneous BT nanopowder with similar particle size and a high tetragonality of 1.0081 was synthesized. The size of the BT nanopowder particles was decreased by reducing the synthesis time. In particular, the BT nanopowder that was synthesized at 220°C for 16 h with a Ba/Ti molar ratio of 4.0 exhibited a high tetragonality of 1.0083 and a small particle size of 126.0 nm.

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Hydrothermal synthesis of BaTiO ₃ nanopowders using TiO ₂ nanoparticles

Abstract

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