【作者】 杨群保； 李永祥； 殷庆瑞； 王佩玲； 程一兵；

【Author】 YANG Qun-bao;LI Yong-xiang;YIN Qing-rui;WANG Pei-ling;CHENG Yi-bing Laboratory of Functional Inorganic Materials The State Key Lab High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China 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无机功能材料开放实验室； 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 Melbourn 3800 Australia；

【摘要】 本文主要讨论了原材料种类及合成条件对水热法制备钛酸铋粉体物相和形貌的影响。结果表明:钛酸铋的合成与原料种类、矿化剂浓度、pH值、反应温度和保温时间密切相关;以Ti（OC₄H₉）₄和Bi（NO₃）₃·5H₂O为原材料,NaOH为矿化剂,在pH=13.6、反应温度为230℃和保温时间为6h的水热合成条件下,可获得层状钙钛矿结构的Bi₄Ti₃O₁₂粉体;TEM观察可知,这种粉体具有片状和针状两种显微形貌,是一种分散性好、团聚轻和平均粒径约200nm的纳米粉体。更多还原

【Abstract】 It was discussed that the influences of starting materials and hydrothermal conditions on phase andmorphology of Bi₄Ti₃O₁₂ powders. By controlling starting materials, mineralizer, pH, reaction temperature and time,the non-agglomerated Bi₄Ti₃O₁₂ powders with a orthorhombic structure were prepared using Bi（NO₃）₃·5H₂O and TiCl₄in a NaOH solution. When the reaction took place at 230℃ for 6h, the products are tabular and needle-like, and theparticle sizes are about 200 nanometers.更多还原