Lattice expansion and oxygen non-stoichiometry of nanocrystalline ceria

Baranchikov, А. Е.; Polezhaeva, O. S.; Ivanov, V. K.; Tretyakov, Yuri D.

doi:10.1039/c0ce00245c

Cited by 86 publications

(67 citation statements)

References 26 publications

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“…D values are randomly distributed between the 20 and 60 nm. A comparison of our results with those of previous studies [8,18,19] were reached the following conclusions. Although changes of particles size resulted in the crystal lattice expansion or contraction of CeO 2 , the effects would become weaker after yttrium doping.…”

Section: Structure Characterizationsupporting

confidence: 68%

Morphology control and photocatalytic characterization of yttrium-doped hedgehog-like CeO2

Zhang

Yuán

et al. 2015

Applied Catalysis B: Environmental

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a b s t r a c tYttrium-doped hedgehog-like ceria with a high concentration of oxygen vacancies was successfully prepared by a traditional hydrothermal process. Crystal phase composition, morphology, and size of as-fabricated products were found to be greatly dependent on the mole ratio of original materials and reaction temperature. The morphology and size of the as-prepared samples were characterized by FE-SEM, HR-TEM and HADDF-STEM. Structure information was obtained by XRD and Raman analyses. Absorption band and band gap energy, which are responsible for the observed photocatalytic behavior, were investigated by UV-vis diffuse reflectance. In addition, the optimum experimental conditions for target products were determined. The as-prepared doped three dimensional (3D) hierarchical structure samples showed higher photocatalytic activity than that of one dimensional (1D) octahedral and nanorod morphology ceria as evaluated by measuring CO 2 liberation form the photocatalytic decomposition of acetaldehyde.

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Section: Structure Characterizationsupporting

confidence: 68%

Morphology control and photocatalytic characterization of yttrium-doped hedgehog-like CeO2

Zhang

Yuán

et al. 2015

Applied Catalysis B: Environmental

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“…Thus, our results indicate that a Ce +3 impurity is actually present in nanocrystalline cerium dioxide. The possibility of the existence of trivalent cerium in nanocrystalline cerium dioxide is being actively discussed, since this can explain the mechanism of well pronounced antioxidant action of nanocrystalline CeO 2 and its biological activity [24,[44][45][46][47][48].…”

Section: Resultsmentioning

confidence: 99%

Cerous phosphate gels: Synthesis, thermal decomposition and hydrothermal crystallization paths

Шекунова

Baranchikov

Иванова

et al. 2016

Journal of Non-Crystalline Solids

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“…What may be surprising, is that different preparation techniques lead to observation of widely varied NP size-lattice parameter relationships [20], [38], [39], [40], [41], [42]. All publications report the most noticeable deviation of unit cell parameter value Δa from that one for the bulk (0.5409 nm) can be observed for particles with diameter D < 5 nm.…”

Section: Structure and Properties Of Ceria Nanoparticles And Surfacesmentioning

confidence: 79%

“…et al[39] studied NP size range of 2.2-34 nm prepared by several sol/gel techniques, observed relatively narrow range of lattice parameters 0.541 nm<a<0.547 nm, and fitted the dependence using the power-law relation:…”

mentioning

confidence: 99%