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钛酸铋纳米粉体的水热合成研究

Study on Hydrothermally Prepared Bi₄Ti₃O₁₂ Nanoparticles

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【Author】 YANG Qun-Bao, LI Yong-Xiang, YIN Qing-Rui, WANG Pei-Ling, CHENG Yi-Bing(1. State Key Lab of High Performance Ceramic and Superfine Microstructure, Chinese Academy of Sciences, Shanghai 200050, China; 2. School of Physics and Materials Engineering, Monash University, Melbourne 3800, Australia)

【机构】中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室； School of Physics and Materials Engineering； Monash University 上海　200050；上海　200050； Melbourne 3800； Australia；

【摘要】讨论了水热合成条件(原料种类、摩尔配比、反应温度和晶化时间)对水热法制备钛酸铋粉体结构和形貌的影响,以Bi(NO3)3·5H2O和TiCl4为原料,NaOH为矿化剂,在180～230℃和2～12h的水热条件下,制备出Bi4Ti3O12纳米粉体.XRD结果表明它是典型的层状钙钛矿结构.TEM观察表明,Bi4Ti3O12纳米晶是方形片状的,无团聚,晶粒边长分布为80～250nm,平均长度约200nm.更多还原

【Abstract】 The influences of hydrothermal conditions (including starting materials, reaction temperature and time) on crystal structure and morphologies of Bi4Ti3O12 particles, were discussed. Bi4Ti3O12 nanocrystalline particles were hydrothermally synthesized in the range of 180-230℃, for 2-12h from Bi(NO3)3·5H2, TiCl4 and NaOH solution. The XRD results reveal that the Bi4Ti3O12 nanoparticles obtained possess a typical bismuth layered perovskite structure. TEM microphotographs show that the Bi4Ti3O12 nanoparticles are tabular, and their average length is about 200 nanometers.更多还原