铈
材料科学
结晶度
结晶
化学工程
降水
硝酸铈
形态学(生物学)
结晶学
复合材料
冶金
化学
物理
生物
气象学
工程类
遗传学
作者
Jian Qing Chen,Huajun Chen,Yanfang Wei
出处
期刊:Materials Science Forum
日期:2013-01-01
卷期号:743-744: 389-396
被引量:2
标识
DOI:10.4028/www.scientific.net/msf.743-744.389
摘要
Ultra-fine cerium dioxide precursor particles was prepared with cerium (III) nitrate hexahydrate (Ce (NO 3 ) 3 6H 2 O) and urea (CO(NH 2 ) 2 ) at 85°C 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.
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