Preparation and characterizations of ZnTiO3 powders by sol-gel process
Preparation and characterizations of ZnTiO3 powders by sol-gel process
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DOI：
10.1007/s10971-005-6708-9
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发表时间：
2005-01-01
影响因子：
2.5
通讯作者：
Yan, JF
中科院分区：
文献类型：
--
作者：
Zhao, LL;Liu, FQ;Yan, JF
采用溶胶-凝胶法制备了 ZnTiO3 粉末。研究了凝胶化条件和凝胶化机理。还详细研究了 ZnTiO3 的结晶行为和特性。实验结果表明，当成胶条件合适、胶凝温度恒定时，可以制备均质、半透明的凝胶。凝胶结构可以描述为Ti和O的网络，其中锌离子分布良好。在700℃以上煅烧的粉末中可以通过XRD检测到ZnTiO3相。ZnTiO3的形成是一个缓慢的反应过程，这导致了ZnTiO3大颗粒的形成，在900℃下煅烧2小时后尺寸在30-50μm范围内。
ZnTiO3 powders were prepared by a sol-gel method. The gelation conditions and the gelation mechanism were investigated. The crystallization behavior and characteristics of the ZnTiO3 were also investigated in detail. The experimental results show that homogenous and translucent gels can be prepared when the gelation conditions are appropriate and the gelation temperature remains constant. The gel structure can be described as a network of Ti and O, in which zinc ions are well distributed. The ZnTiO3 phase can be detected by XRD in the powders calcined above 700 degrees C. The formation of ZnTiO3 is a slow reaction process, which leads to the development of large ZnTiO3 particles, with dimensions after calcination at 900 degrees C for 2 h in the range of 30-50 mu m.