Effects of particle size and polymorph type of TiO2 on the properties of BaTiO3 nanopowder prepared by solid-state reaction

Eunji Song; Dong Hyun Kim; Eun Jin Jeong; Moonhee Choi; Yangdo Kim; Hyeon Jin Jung; Myong Yong Choi

doi:10.1016/j.envres.2021.111668

Effects of particle size and polymorph type of TiO₂ on the properties of BaTiO₃ nanopowder prepared by solid-state reaction

Environ Res. 2021 Nov:202:111668. doi: 10.1016/j.envres.2021.111668. Epub 2021 Jul 8.

Authors

Eunji Song¹, Dong Hyun Kim², Eun Jin Jeong³, Moonhee Choi², Yangdo Kim⁴, Hyeon Jin Jung⁵, Myong Yong Choi⁶

Affiliations

¹ Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, South Korea; School of Materials Science and Engineering, Pusan National University, Busan, 46241, South Korea.
² Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, South Korea.
³ Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, South Korea.
⁴ School of Materials Science and Engineering, Pusan National University, Busan, 46241, South Korea. Electronic address: yangdo@pusan.ac.kr.
⁵ Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, South Korea. Electronic address: laser02hj@kicet.re.kr.
⁶ Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, South Korea. Electronic address: mychoi@gnu.ac.kr.

PMID: 34246639
DOI: 10.1016/j.envres.2021.111668

Abstract

Barium titanate (BaTiO₃) has attracted considerable attention as a perovskite ferroelectric ceramic material for electronic multilayer ceramic capacitors (MLCCs). Fine BaTiO₃ nanopowders with a considerably high tetragonality directly influence the typical properties of nanopowders; however, their synthesis has remained challenging. In this study, we analyzed the effect of two different TiO₂ powders with anatase and rutile phases in a solid-state reaction with barium carbonate (BaCO₃). The effect of the particle size ratio (TiO₂/BaCO₃) of the raw materials on the tetragonality and particle size of the as-synthesized BaTiO₃ powders was also determined through extensive characterization of the powders by X-ray diffraction, field-emission scanning electron microscopy, and Raman spectroscopy. The present investigation reveals that the design BaTiO₃ structure is expected to advance the development of efficient catalytic and sensor materials for sustainable environmental applications.

Keywords: Anatase/rutile titanium dioxide; Barium titanate; Multilayer ceramic capacitor; Particle size ratio; Solid-state reaction.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Barium Compounds*
Particle Size
Titanium*
X-Ray Diffraction

Substances

Barium Compounds
barium titanate(IV)
titanium dioxide
Titanium