无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2011, Vol. 43 ›› Issue (6): 40-.

• 论文 • 上一篇    下一篇

钙钛矿型纳米钛酸铅的制备

李晶,杨效军,徐旺生   

  1. 武汉工程大学化工与制药学院,绿色化工过程省部共建教育部重点实验室,湖北武汉 430073
  • 出版日期:2011-06-10 发布日期:2011-06-14

Preparation of perovskite-type nano-sized lead titanate

 LI  Jing, YANG  Xiao-Jun, XU  Wang-Sheng   

  1. Key Laboratory for Green Chemical Process of Ministry of Education,School of Chemical Engineering & Pharmacy,Wuhan Institute of Technology,Wuhan 430073,China
  • Online:2011-06-10 Published:2011-06-14

摘要: 以无水醋酸铅和钛酸丁酯为原料,采用溶胶-凝胶法制备了钙钛矿型纳米钛酸铅(PbTiO3)粉体。利用X射线衍射(XRD)、粒度测试、扫描电镜(SEM)等分析测试手段,对制备的钛酸铅纳米粉体的结构、性质和形貌进行了表征,并讨论了影响溶胶-凝胶过程的诸因素。研究结果表明:无水乙醇、水解温度、丙三醇和热处理温度等因素均对溶胶-凝胶过程有明显的影响,其中反应温度对胶体形成时间的影响最明显。钙钛矿型钛酸铅晶体在450 ℃时形成,随着热处理温度的升高,粉体的物相组成也将发生变化。钛酸铅干凝胶在600 ℃热处理2 h后可以得到结晶程度很高、平均粒径为53.7 nm、颗粒大小分布均匀的纳米钛酸铅粉体。

关键词: 溶胶-凝胶, 纳米钛酸铅, 钙钛矿型, 晶体结构

Abstract: By using anhydrous Pb(CH3COO)2 and Ti(OBu)4 as raw materials,nano-sized lead titanate (PbTiO3) powder was prepared by sol-gel process.Structure and characteristics,and morphology of nano-sized PbTiO3 powder were analyzed by means of XRD,grain test,and SEM etc..At the same time,different factors affecting the sol-gel process were discussed.Results showed that the factors,such as alcohol,hydrolysis temperature,C3H8O3,and heat treatment temperature had obvious influence on sol-gel process,especially,in which the reaction temperature was the most important factor for the gelation time.Perovskite-type PbTiO3 was formed at heat treatment temperature of 450 ℃.With the increase of heat treatment temperature,the phase composition of PbTiO3 powder was also changed.Highly crystallized,53.7 nm of average grain size,well-distribted nano-sized PbTiO3 powders were obtained by heating dry PbTiO3 gel at 600 ℃ for 2 h. 

Key words: sol-gel, nano-sized lead titanate, perovskite-type;crystal structure

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