Journal of Liaoning Petrochemical University

Journal of Liaoning Petrochemical University ›› 2005, Vol. 25 ›› Issue (2): 29-31.

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Synthesis of NdCoO3 Nanopartical by Microw ave -Gel Method

  

  1. School of Petrochemical Technology , Liaoning University of Petroleum & Chemical Technology ,
    Fushun Liaoning 113001 , P .R .China
  • Received:2004-07-22 Published:2005-06-20 Online:2017-04-18

微波-凝胶法合成NdCoO3 纳米粒子

宫晓杰, 李丽华, 邵　海, 李秀萍, 张金生＊   

  1. 辽宁石油化工大学石油化工学院, 辽宁抚顺113001
  • 作者简介:宫晓杰(1981 -), 女, 山东莱阳市, 在读硕士。

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Abstract:

        The precursors of composite oxides were synthesized by microwave radiation and far infrared radiation heating , in which Co(NO3)2·6H2O and Nd(NO3)3·n H2O were used as starting material, citric acid as complexing agent and NH3·H2O as medium . The microwave radioactive heating can accelerate the formation of sol.The precursors were analyzed by TGA -DTA.Black powders were successfully prepared by heating at different temperature in muffle furnace .The structure and crystal size of the powders were characterized by means of physical techniques , including XRD and IR.The XRD chart of sample prepared at 800 ℃ by sol -gel method and the sample prepared by microwave-gel method were compared.The results show that perofskite rare earth compounded oxide NdCoO3 nano particles are formed in 10 minutes, while it is required 2 hours for the sol -gel method.Microwave heating can accelerate chemical reaction rate , utilization ratio of heat energy is enhanced .

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Key words: 　Microwave -gel method, NdCoO3 nanopar ticles, 　Sy nthesis

摘要： 　    以硝酸钴、硝酸钕为原料, 柠檬酸为络合剂, 氨水作反应介质, 在微波辐照下, 加速溶胶的形成, 并采用远红外辐射干燥箱制得复合氧化物的前驱体。采用热重及差热分析法对前驱体进行分析, 用马弗炉分别在不同温度下煅烧得黑色粉体。采用X 射线衍射和红外光谱等现代分析测试手段对粉体的结构、粒径进行了分析和表征。并将溶胶-凝胶法在800 ℃制得样品的X 射线衍射谱图与微波-凝胶法在相同温度下制得样品的X 射线衍射谱图相比较。结果表明, 微波-凝胶法在较短的时间(10 min)内即生成了钙钛矿型稀土复合氧化物NdCoO3 纳米粒子,而溶胶-凝胶法生成相同的复合氧化物则需要2 h, 体现了微波加热能促进化学反应速率, 提高热能利用率。

关键词: 微波-凝胶法, 　NdCoO3 纳米粒子, 　合成

Cite this article

GONG Xiao -jie,LI Li -hua,et al. Synthesis of NdCoO3 Nanopartical by Microw ave -Gel Method[J]. Journal of Liaoning Petrochemical University, 2005, 25(2): 29-31.

宫晓杰, 李丽华, 邵　海, 等. 微波-凝胶法合成NdCoO3 纳米粒子[J]. 辽宁石油化工大学学报, 2005, 25(2): 29-31.

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