| 沉淀法制备CeO2纳米晶与表征 |
| |
| 引用本文： | 董相廷,李铭,张伟,刘桂霞,洪广言.沉淀法制备CeO2纳米晶与表征[J].中国稀土学报,2001,19(1):24-26. |
| |
| 作者姓名： | 董相廷 李铭 张伟 刘桂霞 洪广言 |
| |
| 作者单位： | 1. 长春光学精密机械学院应用理学分院,
2. 中国科学院长春应用 化学研究所, |
| |
| 基金项目： | 长春光学精密机械学院青年基金资助项目
(YJ9503-1) |
| |
| 摘 要： | 采用乙醇为分散剂和保护剂，用反向沉淀法制备了不同粒径的CeO2纳米晶。XRD分析表明，当焙烧温度为250－800℃时，所合成的CeO2纳米粒子属于立方晶系，空间群为OH^5-FM3M。TEM分析表明，CeO2纳米粒子呈球形，粒度随焙烧温度的增加而增大。热失重分析表明样品的热失重主要受温度的影响，而焙烧时间的影响不大。相对密度分析表明，随CeO2纳米晶粒度的增大，粉末的密度增加。
|
| 关 键 词： | 二氧化铈 纳米粒子 沉淀法 制备 表征 |
| 文章编号： | 1000－4343(2001)01－0024－03 |
| 修稿时间： | 1999年11月28 |
Preparation and
Characterization of Nanocrystalline CeO2 by Precipitation Me thod |
| |
| DONG Xiang-ting,LI Ming,ZHANG Wei,LIU Gui-xia,HONG Guang-yan.Preparation and
Characterization of Nanocrystalline CeO2 by Precipitation Me thod[J].Journal of the Chinese Rare Earth Society,2001,19(1):24-26. |
| |
| Authors: | DONG Xiang-ting LI Ming ZHANG Wei LIU Gui-xia HONG Guang-yan |
| |
| Abstract: | CeO2 nanocrystalline particulates with different sizes were prepared by precip itation method using ethanol as dispersive and protective reagent. XRD patterns show that the synthesized CeO2 is cubic in structure with space group O 5H-FM3M when calcination temperature is within 250～800 ℃. TEM pho tographs reveal that CeO2 particles are spherical in shape. The mean sizes of the part icles increase with the increase of calcination temperatures. Thermogravimetric analysis indicates that weight loss of precursor mainly depends on calcination t emperature, and little depends on calcination time. Measurement of CeO2 relati ve density shows that the relative density of CeO2 nanocrystalline powders imp roves with the increasing of CeO2 particles sizes. |
| |
| Keywords: | |
| 本文献已被 维普 万方数据 等数据库收录！ |
