Novel synthesis of nanocrystalline CeO2 by mechanochemical and water-in-oil microemulsion methods

被引：57

作者：

Hadi, Abdul ^{[1
]}

Yaacob, Iskandar Idris ^{[1
]}

机构：

[1] Univ Malaya, Fac Engn, Dept Engn Mech, Ctr Nanotechnol Precis & Adv Mat, Kuala Lumpur 2211, Malaysia

来源：

MATERIALS LETTERS | 2007年 / 61卷 / 01期

关键词：

nanomaterials; CeO2; mechanochemical; microemulsion; characterization methods;

D O I：

10.1016/j.matlet.2006.04.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline cerium dioxide (CeO2) had been synthesized by two different methods which were mcclianochemical and water-in-oil microemulsion. Effects of synthesis conditions on properties of natiocrystalline. cerium dioxide were investigated. X-ray diffraction (XPD) was used to characterize the phase and crystallite size of synthesized cerium dioxide nanoparticles. XRD results showed that face centered cubic CeO2 nanoparticles with crystallite size in nanometer scale were formed. The crystallinity increased with increasing annealing temperature. The average specific surface area of the particles was probed using gas adsorption-desorption measurements. The average particles size was calculated from the specific surface area and was determined to be 5.2 nm for microemulsion samples and 6.9 nm for mechanochemical samples. These results showed that properties of synthesized cerium dioxide could be tailored by adjusting the synthesis conditions. (c) 2006 Elsevier B.V All rights reserved.

引用

页码：93 / 96

页数：4

共 20 条

[11] Chemical mechanical polishing of thermal oxide films using silica particles coated with ceria [J].