Low-temperature preparation of nano-sized particles of some alkali titanates by solution process

被引：0
作者：
Kobayashi, Megumi [1 ]
Fujimoto, Kenjiro [1 ]
Ito, Shigeru [1 ]
机构：
[1] Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
来源：
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy | 2009年 / 56卷 / 05期
关键词：
Alkali metal elements; Nano-sized particles; Solution process; Titanate;
D O I：
10.2497/jjspm.56.225
中图分类号：
学科分类号：
摘要：
Alkali ions were co-precipitated with titanium hydroxide gels. When Ti(S04)2 solution was added to KOH solution with K: Ti = 10:1 (in molar ratio), the potassium remains in the precipitated gel, in spite of several times of washing. Excess amount of alkali and pH > 9 were the essential conditions for the co-precipitation. Similar results were obtained for the other alkali elements; Li and Na. Nano-sized particles of K 2O-6TiO2, Li2O-TiO2 and Na 20-3TiO2 with 20-30nm in size were respectively obtained by heating the precipitates at 500 or 600 °C. In addition, the thin films of alkali titanates were obtained on Si substrate by dripping Ti(S0 4)2 solution and MOH solution for 30-60 min.
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页码：225 / 231
页数：6
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