Formation Mechanism of the Slice and Rod-like Cerium Dioxide Precursor Particles
Ultra-fine cerium dioxide precursor particles was prepared with cerium (Ⅲ) nitrate hexahydrate (Ce(NO3)36H2O) and urea (CO(NH2)2) at 85℃ by homogenous precipitation method.Effects of reaction and ageing time on the morphology of the precursor particles were studied,the morphology of precursor particles was characterized by scan electronic microscope and the crystallinity of the precursors was studied by X-ray diffraction.The result showed that the mono-dispersed spherical particles turned into flower and bundle-like particles as reaction time increasing,the particles turned into slice and rod-like particles as the ageing time increasing,the transition process occurred in ageing process was later than that in the reaction process,the spherical particles were less crystallization and the slice and the rod-like particles were at a state of fine crystallization.
Ultra-fine cerium dioxide Precursor particles Homogenous precipitation Crstallinity
Jianqing Chen Zhigang Chen Yong Wei
College of Materials Science and Technology, Hohai University, Nanjing 210098, China Suzhou University of Science and Technology, Suzhou 215011, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
389-396
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）