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RE₂NiO₄（RE=Eu,Nd,La,Ce）纳米晶制备条件的选择及表征

Preparation and characterization of RE₂NiO₄ （RE=Eu,Nd,La,Ce）na’noparticles

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【Author】 WANG Kun-jie~1,MO Zun-li~(1,2),CHEN Hong~1,ZHANG Dong-yun~1,SUN Yin-xia~1,LI He-jun~2 ( 1. College of Chemistry and Chemical Engineering,Northwest Normal University, Lanzhou 730070,Gansu,China; 2 . College of Material Science and Engineering,Northwestern Politechnical University,Xi’an 710072,Shaanxi,China)

【机构】西北师范大学化学化工学院；西北工业大学材料科学与工程学院甘肃兰州　730070；甘肃兰州　730070；西北工业大学材料科学与工程学院；陕西西安　710072；甘肃兰州　730070；陕西西安　710072；

【摘要】采用溶胶-凝胶法制备了RE2NiO4纳米晶,对其最佳条件进行了正交实验选择,用X-射线、透射电镜和扫描电镜对其进行了表征分析,并研究了最佳条件下不同热处理温度对纳米晶形貌、粒度的影响.结果表明,在最佳制备条件下产物的平均粒径为45nm,结构呈体心立方,粒径分布均匀,晶化度好,并伴有自组装现象.更多还原

【Abstract】 The na’noparticles of RE₂NiO₄ were prepared by sol-gel method. The best condition of the product was selected by direct cross method. The na’noparticles were characterized by means of X-ray（XRD）, transmission electron microscopy（TEM）and scanning electron microscope（SEM） . The physiognomy and sizes of na’noparticles were researched under the best condition in the different calcine temperature. The results indicate that the na’noparticles are cubical and their sizes are well-distributed. The average diameter of the RE₂NiO₄ particles is 45 nm. There are some agglomeration and self-assemble phenomenon in the particles.更多还原