Preparation and formation mechanism of linear Na2Ti3O7

被引：0
|
作者：
He H. [1 ]
Wang J. [1 ]
Yang Y. [1 ]
Wang J. [1 ]
机构：
[1] Liaoning Key Laboratory for Fabrication and Application of Superfine Inorganic Powders, Dalian Jiaotong University, Dalian, 116028, Liaoning
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2016年 / 44卷 / 01期
关键词：
Hydrothermal method; Linear sodium titanate; Titanium oxide;
D O I：
10.14062/j.issn.0454-5648.2016.01.18
中图分类号：
学科分类号：
摘要：
Linear Na2Ti3O7 was synthesized by a hydrothermal method with anatase TiO2 and NaOH as raw materials, and water and ethanol as solvents. The effects of hydrothermal time, hydrothermal temperature, alkali concentration and volume ratio of water to ethanol on the phase structure and microstructure of the product were investigated by X-ray diffraction, scanning electron microscopy and thermogravimetric-differential scanning calorimetry, respectively. In addition, the formation mechanism was also discussed. The results indicate that the morphology of Na2Ti3O7 shows a linear structure when synthesis at the concentration of NaOH of 2.5 mol/L, the volume ratio of water to ethanol of 1:3, the hydrothermal temperature of 180℃ and the hydrothermal time of 48 h. The reaction mechanism can be given based on the classical theory of crystal growth and a model of splitting. The micro-morphology of the product is split from a platelet structure to a line structure. © 2016, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：117 / 124
页数：7
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