Hydrothermal Synthesis of Tetragonal Barium Titanate from Barium Hydroxide and Titanium Dioxide under Moderate Conditions

• Published in: Journal of the American Ceramic Society Vol. 82; no. 11; pp. 3254 - 3256
• Main Authors: Wu, Mingmei, Long, Junbiao, Wang, Guangguo, Huang, Aihong, Luo, Yuji, Feng, Shouhua, Xu, Ruren
• Format: Journal Article
• Language: English
• Published: Westerville, Ohio American Ceramics Society 01.11.1999; Blackwell
• Subjects: Chemistry; Exact sciences and technology; Inorganic chemistry and origins of life; Preparations and properties; Salts; Tetragonal lattices; Transition metal Compounds; Chemical preparation; Barium Titanates; Experimental study; Hydrothermal condition; Alkaline earth metal Compounds; Powder
• ISSN: 0002-7820; 1551-2916
• DOI: 10.1111/j.1151-2916.1999.tb02235.x

Tetragonal BaTiO3 powders were prepared hydrothermally, using Ba(OH)2·8H2O and TiO2 (anatase), in the absence of anions such as chloride ions, at a temperature of 220°C for several days. Characterization via X‐ray diffractometry, scanning electron microscopy, and differential scanning calorimetry confirmed that increasing the Ba:Ti molar ratios (from 1:1 to 4:1) and alkaline concentrations (from 1.0M to 3.0M) promotes the formation of tetragonal BaTiO3.