Nanocrystalline Ceria through Homogeneous Precipitation in Alcohol-Water Mixed Solvent

被引：8
作者：
Remani, Kottayilpadi C. [1 ]
Ghosh, Swapankumar [1 ]
机构：
[1] NIIST, Mat & Minerals Div, Thiruvananthapuram 695019, Kerala, India
来源：
TRANSACTIONS OF THE INDIAN CERAMIC SOCIETY | 2009年 / 68卷 / 04期
关键词：
CeO2; Nanocrystals; Precipitation; Mixed solvent; HR-TEM; PARTICLES; BEHAVIOR; NANOPARTICLES; POWDERS;
D O I：
10.1080/0371750X.2009.11082173
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Uniform nanosized 3-6 nm cerium oxide single crystals have been synthesized by ammonia precipitation in alcohol-water mixed solvent. The size was estimated by photon correlation spectroscopy (PCS), X-ray diffraction (XRD) and high resolution transmission electron microscopy (HR-TEM). The surface area of CeO2 nanocrystals were measured by Brunauer-Emmett-Teller (BET) technique. The nanoparticles synthesized were mono-dispersed with a narrow size distribution with low polydispersity index (PDI). The size of the ceria nanocrystals synthesized was found to decrease with decrease in the epsilon of the solvent. The crystals precipitated from isopropyl alcohol were highly crystalline. The smallest CeO2 crystals were obtained using ethylene glycollwater medium whereas lowest PDI was obtained from IPA/water system.
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收藏
页码：185 / 188
页数：4
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