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

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

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 co...

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Veröffentlicht in:Journal of the American Ceramic Society 1999-11, Vol.82 (11), p.3254-3256
Hauptverfasser: Wu, Mingmei, Long, Junbiao, Wang, Guangguo, Huang, Aihong, Luo, Yuji, Feng, Shouhua, Xu, Ruren
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Exact sciences and technology
Inorganic chemistry and origins of life
Preparations and properties
Salts
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Zusammenfassung: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.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1999.tb02235.x