Effect of temperature and time on solvothermal synthesis of tetragonal BaTiO3

Bulletin of Materials Science

关键词: Powders-chemical preparation;    X-ray methods;    electron microscopy;    BaTiO3;    tetragonal phase.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Tetragonal BaTiO3 nanoparticles are synthesized via solvothermal route in an ethanol water mixture. Ba(OH)2.8H2O is used as Ba precursor and TiO2 (P25 Degussa ∼25 nm, 30% anatase, 70% rutile) is used as Ti precursor in the Ba : Ti molar ratio 2 : 1. Effect of temperature and time study on solvothermal synthesis of BaTiO3 revealed that a moderate reaction temperature i.e. 185°C and longer reaction time favour tetragonal phase stabilization. Dissolution–precipitation appears to be the transformation mechanism for the crystallization of BaTiO3 from particulate TiO2 precursor.

【 授权许可】

CC BY