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^Study on the LaCoO3 Nanocrystalline Preparedby Coprecipitation under Ultrasonic Radiation

Liang Xinyi; Qin Yongning; Qi Xiaozhou ;Zheng Weiming ;Song Jian (Department of Chemical Engineering,Tianjin University,Tianjin300072)  
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.
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