Nanotechnology · 2006 · 178 citations · 26 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials ChemistryNanomaterialsNanotechnologyNanomaterial CharacterizationNanomaterials SynthesisNanoparticle CharacterizationNanoparticle SynthesisNanoscale MaterialsSelf-assembly Of NanomaterialsCerium Oxide NanoparticlesMetal Oxide Nanoparticle SynthesisMetal Oxide Nanoparticles SynthesisNanoparticle FormationNanoparticle Self-assemblyNanostructured OxidesUltrafine ParticlesX-ray Diffraction Analysis
A new method to directly synthesize single-crystalline CeO2 nanoparticles has been developed. The advantages of the method are rapid synthesis, at normal atmosphere, 100% productive ratio and low cost, with a great potential for scale-up. X-ray diffraction (XRD) spectra showed unusual peak width versus particle size, compared with Scherrer equation predictions. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), electron diffraction and ultraviolet (UV) absorption were used to examine the particle size and microstructure to find out the cause. As a result, ultrafine particles with a size less than 6 nm were found to be self-assembled into a 'coherent interface', so that a large group of particles behave like a large single particle in XRD.
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Converting Ceria Polyhedral Nanoparticles into Single-Crystal Nanospheres
Xiangdong Feng, Dean C. Sayle, Zhong Lin Wang et al. · Science · 2006 · 611 citations · Full text
Natural Sciences, Materials Engineering, Materials Science +17