Acta Chimica Sinica ›› 2000, Vol. 58 ›› Issue (6): 683-687. Previous Articles     Next Articles

Original Articles

均分散球形氧化铕超细微粒的制备和表征

侯文华;马军;颜其洁;陈懿;陈静   

  1. 南京大学化学化工学院;南京化工大学应用化学系
  • 发布日期:2000-06-15

Preparation and characterization of monodispersed spherical Eu~2O~3 ultrafine particles

Hou Wenhua;Ma Jun;Yan Qijie;Chen Yi;Chen Jing   

  • Published:2000-06-15

Monodispersed spherical Eu~2O~3 ultrafine particles were successfully prepared by calcinating the precusor precipitate Eu(OH) CO~3·H~2O particles obtained by aging a Eu(NO~3)~3 solution in the presence of urea. The effect of various reaction conditions such as the concentration of urea and Eu(NO~3)~3, and the pH on the resulting particles was investigated and the optimal preparation conditions were obtained. XRD, IR, TG, TEM and specific surface area measurement techniques were used to characterize the obtained samples.

Key words: EUROPIUM OXIDE, ULTRAMICRON, UREA, DECOMPOSITION, X-RAY DIFFRACTION ANALYSIS, INFRARED SPECTROPHOTOMETRY, TRANSMISSION ELECTRON MICROSCOPY, THERMOGRAVIMETRY

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