Simple chemical preparation of perovskite-based materials using alkali treatment

Po Chin Chen, Min Chiao Tsai, Yi Jen Huang, Hsin-Tien Chiu, Chi Young Lee*

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

In this work, a simple alkali treatment process was introduced to synthesize ABO 3 perovskite related materials: CaTiO 3 (CTO), SrTiO 3 (STO), BaTiO 3 (BTO) and Ba xSr 1-xTiO 3 (BST). The perovskite materials, synthesized by using stoichiometric amounts of corresponding alkaline solutions Ba(OH) 2, Sr(OH) 2, Ca(OH) 2 and powdered TiO 2, are pure phase and well-crystallized. The obtained powders are round, round-edged cubes and cubes with sharp edges for BaTiO 3, SrTiO 3 and CaTiO 3 respectively. What's more, the Ba content (x) in BST can be directly and precisely modified to be any value between one and zero. And, the morphology of SrTiO 3 can be manipulated by altering the reaction time. As time is prolonged, the morphology of the product changes from round to round-edged cubes to sharp-edged cubes. In the future, materials with such specific microstructure and morphologies may be used in electro-optical and photocatalytic applications.

Original languageEnglish
Pages (from-to)1990-1993
Number of pages4
JournalCrystEngComm
Volume14
Issue number6
DOIs
StatePublished - 21 Mar 2012

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