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缺陷化合物La2/3TiO3-λ(λ=0.000~0.046)粉末的水热合成及表征

陈代荣a; 焦秀玲b; 徐如人b   

  1. a山东大学化学系; 济南250100; b吉林大学化学系; 长春130023
  • 收稿日期:1997-05-30 修回日期:1997-07-02 出版日期:1998-06-20 网络出版日期:1998-06-20

Hydrothermal Synthesis and Characterization of Oxygen Deficient Compounds La2/3TiO3-λ (λ=0.000~0.046) Powders

CHEN Dai-Ronga; JIAO Xiu-Lingb; XU Ru-Renb   

  1. aDepartment of Chemistry; Shandong University Jinan 250100 China; bDepartment of Chemistry; Jilin University Changchun 130023 China
  • Received:1997-05-30 Revised:1997-07-02 Published:1998-06-20 Online:1998-06-20

摘要: 水热法合成了系列缺陷化合物La2/3TiO3-λ(λ=0.000~0.046)粉末,利用XRD及TEM等技术对产物进行了表征;氧缺陷浓度增大,晶胞体积增大,在λ=0.020时,化合物由正交相转变为四方相;产物颗粒间聚集度较小,颗粒外形呈较规则六面体,平均直径0.1~0.3μm.

关键词: 缺陷化合物, La2/3TiO3-λ, 水热合成

Abstract: The series deficient compounds La2/3TiO3-λ(λ=0.000-0.046) powders were hydrothermallysynthesised from double hydrous oxides La2O3·3TiO2·nH2O, and characterized by XRD, TEMand other technologies. The cell volumes of the products would change to large with the increasingof deficient oxidation, and the crystal symmetry transforms from orthorhombic to tetragonal at λ=0.020. The payticle-sizes of these powders were about 0.1~0.3μm with a mode of particle-sizedistribution, and increased with the increasing of deficient oxidation.

Key words: deficient compound, La2/3TiO3-λ, hydrothermal sythesis

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