Nanocrystalline ceria: Synthesis, structure-sensitive properties, and promising applications
Directed search for further manifestations of size-dependent effects in the functional properties of nanomaterials constitutes a key line of nanotechnologies research. The major size-dependent effects were analyzed for nanocrystalline ceria. The practically significant techniques for preparation of ceria nanopowders with controllable micromorphology were analyzed. Selected promising applications of this material were described.
Ключевым направлением исследований в [...]
Thermal stability of nanocrystalline CeO2 prepared through freeze drying
The growth of ceria nanoparticles during annealing at high temperatures (up to 700°C) has been studied by X-ray diffraction, transmission electron microscopy, and low-temperature nitrogen adsorption measurements. The results indicate that cerium dioxide nanopowders prepared using freeze drying offer enhanced thermal stability.
Методами рентгенофазового и рентгенографического анализа, просвечивающей электронной микроскопии и низкотемпературной адсорбции азота исследованы закономерности [...]
Specifics of high-temperature coarsening of ceria nanoparticles
Particle coarsening trends at high temperatures (200 to 700°C) in ceria nanoparticles having various chemical histories are determined by powder X-ray diffraction, low-temperature nitrogen adsorption, transmission electron microscopy, and small-angle neutron scattering. Coherent intergrowth of individual CeO2 crystallites is the main scenario of nanoparticle coarsening.
С применением методов рентгенофазового анализа, низкотемпературной адсорбции азота, просвечивающей электронной микроскопии [...]
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