Ceria nanoparticles: Size, size distribution, and shape
Top Cited Papers
- 15 April 2004
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 95 (8) , 4319-4326
- https://doi.org/10.1063/1.1667251
Abstract
Nanocrystalline ceria particles have been prepared by mixing aqueous solutions of cerium nitrate and hexamethylenetetramine at room temperature. The smallest size of nanoparticles synthesized is 2 nm. For each batch prepared, a narrow size distribution is found with a standard deviation less than ±15%. A transmission electron microscopy (TEM) investigation shows that these particles are single crystals having either an octahedral shape with eight {111} surfaces, or with an additional {200} surface-truncated octahedral shape. In-situ ultraviolet-visible light absorption has been performed to measure the absorption edge and to monitor the growth of nanoparticles. The results from light absorption correlate well with those of the TEM images, providing an in-situ method to measure the particle size during synthesis.Keywords
This publication has 21 references indexed in Scilit:
- Nanostructured Cerium Oxide “Ecocatalysts”MRS Bulletin, 2001
- Materials for fuel-cell technologiesNature, 2001
- The surface structure of CeO2(001) single crystals studied by elevated temperature STMSurface Science, 2001
- Surface structure determination ofby angle-resolved mass spectroscopy of recoiled ionsPhysical Review B, 1999
- The utilization of ceria in industrial catalysisCatalysis Today, 1999
- Computer modeling of surfaces and defects on cerium dioxideSurface Science, 1995
- Electrical characteristics of epitaxial CeO2 on Si(111)Applied Physics Letters, 1994
- Effect of defects on the stability of heteroepitaxial ceramic interfaces studied by computer simulationPhysical Review B, 1994
- The role of oxygen vacancies on ceria surfaces in the oxidation of carbon monoxideSurface Science, 1994
- Formation of zirconia—ceria layers on silicon wafers using laser ablationThin Solid Films, 1994