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 [...]
Nanoceria as Antioxidant: Synthesis and Biomedical Applications
The therapeutic application of nanomaterials has been a focus of numerous studies in the past decade. Due to its unique redox properties, cerium oxide (ceria) is finding widespread use in the treatment of medical disorders caused by the reactive oxygen intermediates (ROI). The radical-scavenging role of ceria nanoparticles (nanoceria) have been established, as well as [...]
Origin of Anomalous Lattice Expansion in Oxide Nanoparticles
Anomalous lattice expansions have been measured for the first time in monodisperse ceria nanoparticles and in barium titanate single nanoparticles by electron diffraction. X-ray photoelectron spectroscopy studies on ceria nanoparticles and ab initio computer simulation on barium titanate clusters show that the origin of expansion is the decrease of electrostatic force caused by valence reduction [...]
On the origin of the lattice constant anomaly in nanocrystalline ceria
The lattice parameter of nanocrystalline ceria films prepared by sputtering was monitored as a function of annealing temperature. Within the temperature range of 150–420°C, an equilibrium with atmospheric oxygen is established within a few hours, whereas grain growth does not occur. On the basis of the experimental results and analysis of literature data, we present [...]
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