(ba, sr)tio3 纳米棒的反相微乳法制备与表征preparation and .pdf

2007 年第65 卷 化 学 学 报 Vol. 65, 2007 第5 期, 470～474 ACTA CHIMICA SINICA No. 5, 470～474 ·研究简报· (Ba, Sr)TiO 纳米棒的反相微乳法制备与表征 3 朱启安* 陈万平 宋方平 王树峰 (湘潭大学化学学院 湘潭 411105) 摘要 在氢氧化钡和氢氧化锶水溶液/Triton X-100/环己烷/正己醇四元 W/O 型反相微乳液中制备了钛酸锶钡纳米棒, 研究了ω0 值(水与表面活性剂Triton X-100 的物质的量之比) 、反应物浓度、陈化时间对产品形貌和尺寸的影响, 用TEM, SAED, SEM, EDS 和XRD 等技术对产品进行了表征. 结果表明, 所得Ba0.7Sr0.3TiO3 纳米棒长约500～1200 nm、直径约 为50～120 nm; 具有立方相单晶结构. 产品中钡、锶、钛的物质的量之比约为0.7 ∶0.3 ∶1. 关键词 钛酸锶钡; 反相微乳法; 纳米棒 Preparation and Characterization of (Ba, Sr)TiO Nanorods by 3 Reverse Microemulsion Method ZHU, Qi-An* CHEN, Wan-Ping SONG, Fang-Ping WANG, Shu-Feng (College of Chemistry, Xiangtan University , Xiangtan 411105 ) Abstract Barium strontium titanate nanorods were synthesized in quaternary water/oil (W/O) microemul- sion solution containing Triton X-100, cyclohexane, n-hexanol and water with Ba(OH) and Sr(OH) as re- 2 2 actants. The effects of different conditions such as ω0 (the molar ratio of water to surfactant Triton X-100), reactant concentration and the aging time on the morphology and the size of the products were studied. The obtained products were characterized by TEM, SAED, SEM, EDS and XRD techniques. The results show that the prepared Ba Sr TiO nanorods belonging to cubic phase are a single crystal structure with a length 0