摘要
首次在共沉淀阶段使用超声波辐照的方法制备了ＬａＣｏＯ３复合氧化物纳米微晶，通过Ｘ射线衍射分析（ＸＲＤ）、透射电子显微镜（ＴＥＭ）和比表面（ＢＥＴ）等分析手段研究了不同频率的超声波对ＬａＣｏＯ３结构和性能的影响。实验证明，在实验范围内随着趋声波频率的增加ＬａＣｏＯ３粒径减小、比表面增加、（１０４）晶面和（０２４）晶面的衍射强度减小。
LaCoO3 nanocrystalline was first prepared by coprecipitation under ultrasonic rediation.The effects of different ultrasonic frequencies on structure and property of LaCoO3were studied by XRD,TEM and BET.The results show that LaCoO3particle size decreases, specific surface area increases and diffracted intensity of (104)and (024) crystal faces decrease with the increase of ultrasonic frequency in the experimental rage.
基金
天津市青年基金
