Hydrothermal Synthesis of Tetragonal Barium Titanate from Barium Hydroxide and Titanium Dioxide under Moderate Conditions |
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| Authors: | Mingmei Wu Junbiao Long Guangguo Wang Aihong Huang Yuji Luo Shouhua Feng Ruren Xu |
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| Affiliation: | Department of Chemistry, Zhongshan University, Guangzhou 510275, People's Republic of China;Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University,Changchun 130023, People's Republic of China |
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| Abstract: | 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 1.0 M to 3.0 M ) promotes the formation of tetragonal BaTiO3. |
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