摘要
以NaOH、Bi2O3和Nb2O5为原料,KOH为矿化剂,通过乙二醇采用水热法合成了结晶度高、晶粒发育完整的Na1.5Bi2.5Nb3O12粉体。借助XRD分析了反应温度和反应时间对其相结构的影响,并通过SEM分析了Na1.5Bi2.5Nb3O12晶粒形貌。实验结果表明:在反应温度为160℃、反应时间为18h的条件下,可得到厚度约50nm、直径约为200nm的片层结构纯相Na1.5Bi2.5Nb3O12粉体。
Na1. 5 Bi2.5 Nb3 O12 powders which are high crystallinity and perfect fine-grains are prepared by hy-drothermal method using Nb2O5, Bi2O3, NaOH as raw materials, and KOH serves as a mineralizer with the addition of ethylene glycol. The influence of the reaction temperature and the reaction time on the phase structure is analyzed by means of X-ray diffraction (XRD). The morphology of Na1.5Bi2.5Nb3O12 is analyzed by scanning electron microscopy (SEM). The results show that pure Na1.5Bi2.5NbaO12 plates-lay-ered structure powders with the average thickness of 50nm and diameter of 200 nm are synthesized at the reaction temperature of 160 ℃ and the reaction time of 18 h.
出处
《空军工程大学学报(自然科学版)》
CSCD
北大核心
2013年第3期91-94,共4页
Journal of Air Force Engineering University(Natural Science Edition)
基金
国家自然科学基金资金资助项目(11274389
11204378)
陕西省自然科学基金资助项目(2011JM6012)
关键词
铌酸铋钠
水热法
超细粉体
Na1.5 Bi2.5 Nb3O12
hydrothermal method
fine-powders