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氧化剂用量对燃烧合成掺杂CeO_2纳米粉体的影响 被引量：1

Effect of the Amount of Oxidants on the Combustion Synthesis of Doped-Ceria Nanosized Powders
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摘要 柠檬酸作络合剂和燃料,硝酸盐作氧化剂,利用柠檬酸硝酸盐低温燃烧法合成了具有单一组成的Ce0.8Y0.2O1.9超细粉体.研究了不同氧化剂用量对凝胶的燃烧特性及粉体性能的影响.用TG-DTA,XRD,FTIR,TEM,Raman等分析方法对凝胶的分解和合成粉体的性能进行了表征.结果表明,通过调节氧化剂的用量,可以控制粉体的粒度及产物中碳酸盐的含量.TEM研究表明,改变氧化剂的加入量可以获得颗粒尺寸约为40 nm、粒度分布均匀的粉体.Raman光谱研究表明,随氧化剂用量的增加,氧空位的浓度增大. Using citric acid as the chelating agent of metal ions, and nitrates as the oxidants, the ultrafine Ce0.8Y0.2O1.9 powders with the homogeneous composition were synthesized by nitrates-citric acid low-temperature combustion method. The effect of the amount of oxidant on the gel decomposition and the properties of the as-burned products were investigated. Sample characterization was performed by means of TG-DTA, XRD, FTIR, TEM and Raman techniques. The results showed that the particle size , the particle size distribution and the quantities of the residues could be controlled by modulating the amount of oxidant（φ）. TEM micrographs showed that the powders, smaller than 40 nm in size and uniformly distributed, were obtained. Raman spectroscopy showed that the density of oxygen vacancy increased with the increase of oxidant consumption.
作者 徐红梅 严红革 陈振华
机构地区 湖南大学材料科学与工程学院
出处 《湖南大学学报（自然科学版）》 EI CAS CSCD 北大核心 2006年第6期90-93,共4页 Journal of Hunan University:Natural Sciences
基金 国家自然科学基金资助项目(50304008) 教育部高等学校博士学科点专项科研基金资助项目(20030532016)
关键词 低温燃烧 纳米粉 Ce0.8Y0.2O1.9 固体电解质 low-temperature combustion nanosized powders Ce0.8Y0.2O1.9 solid electrolytes
分类号 TQ133 [化学工程—无机化工] TM911.4 [电气工程—电力电子与电力传动]
  • 相关文献

参考文献14

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共引文献3

同被引文献17

  • 1李自强,苏辉煌,李书年,牛求彬.还原扩散法直接制造ZrNi合金粉末的研究[J].粉末冶金技术,1996,14(4):243-248. 被引量：7
  • 2李岳,米晓云,季洪雷,安春爱.低温燃烧合成无机化合物的研究进展[J].长春理工大学学报（自然科学版）,2007,30(2):90-93. 被引量：10
  • 3LI Guan-ping, Nobuyuki Nishimiya. Phase relation of Zr(FexMn1-x)2-H2 systems studied by XRD and isothermalcalorimetric measurement [J]. Journal of Alloys and Compounds, 2004, 375(1/2): 205-211.
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  • 5LI S L, CHENG H H, DENG X X, et al. Investigation of hydrogen absorptiorddesorption properties of ZrMn0.85-xFe1+x alloys [J]. Journal of Alloys and Compounds, 2008, 460(1/2): 186-190.
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引证文献1

湖南大学学报（自然科学版）
2006年 第6期

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