高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (3): 355.

• 研究论文 • 上一篇    下一篇

共沉淀法合成Pb3Nb2O8纳米粉

赵辉, 谢红, 冯守华   

  1. 吉林大学化学系, 教育部无机合成与制备化学重点实验室, 长春 130023
  • 收稿日期:2000-03-14 出版日期:2001-03-24 发布日期:2001-03-24
  • 通讯作者: 冯守华(1956年出生),男,博士,教授,博士生导师,从事材料化学研究.
  • 基金资助:

    国家自然科学基金(批准号:29731010)资助

Co-deposited Synthesis of Nanosize Pb3Nb2O8 Powder

ZHAO Hui, XIE Hong, FENG Shou-Hua   

  1. Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130023, China
  • Received:2000-03-14 Online:2001-03-24 Published:2001-03-24

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摘要： 在PbO-Nb2O5-KOH-H2O体系中,于90℃下得到纳米级Pb3Nb2O8陶瓷粉.原料来源及配比、溶液碱度及合成温度对产物物相的形成有较大影响.在Pb3Nb2O8的合成中,必须以可溶性铌酸盐和醋酸铅作为反应原料,同时以KOH调节体系中铌酸盐的聚集状态.当n(Pb)/n(Nb)接近1/1,KOH浓度在1～3mol/L时,得到Pb3Nb2O8纯相,当KOH浓度大于3mol/L时容易生成反应活性较低的PbO,产生杂相.

关键词: 共沉淀法合成, Pb3Nb2O8, 纳米晶陶瓷粉

Abstract: Nanosize Pb3Nb2O8 powder has been obtained at 90 ℃ from Nb2O5-PbO-KOH-H2Osystem. The influence of starting materials and their molar ratios, pHvalue of the solution and the synthesis temperature were systematically investigated. Soluble niobate and lead acetate have been chosen for the synthesis of Pb3Nb2O8. Pure phase product could be obtained when the molar ratio of Pb to Nb is close to 1, and concentration of KOHto 1—3 mol/L. PbOappears as the main phase when KOHconcentration is greater than 3mol/L.

Key words: Co-deposited synthesis, Pb3Nb2O8, Nanosize powder

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