Apr 1, 2020 · In CeO 2 NPs, the lattice parameter and the electronic structure are size-dependent. CeO 2 -based nanoparticles (NPs) offer unique redox properties that open promising possibilities for applications in catalysis, (1,2) energy storage, (3,4) biomedicine, (5) and nuclear activities.

In the present work, we have studied particles as small as 1.1 nm mean diameter and have found no evidence of a cubic Ce2O3 lattice. Remarkably, at this size, the electron diffraction data indicate the fluorite lattice of CeO2.

Dec 15, 2017 · We show that the activation of atomically dispersed Pt 2+ on CeO 2 via high-temperature (e.g., 750°C) treatment in steam simultaneously achieved the goals of low-temperature CO oxidation activity while providing thermal stability.

Doping of an oxide such as Ce02, Y203, and CaO into Zr02 extremely improves its mechanical and electrical properties such as toughness, strength, thermal-shock resistance, and ionic conductivity. The toughness of the ceria-doped zirconia ceramics (Zr02-X mol %%uo Ce02=Zr, I/, ooCex/, oo02), for example, is considerably higher than those of ...

the amount of Ce02 that can be added to current TWC catalysts while still achieving the desired performance benefits. An alternative approach to adding more Ce02 is to enhance the intrinsic promotional effects of Ce02. One approach suggested is to increase the oxygen ion mobility in the Ce02 lattice by incorporating lower valent ions such as

Jan 30, 1992 · Thin films on Al 2 O 3 substrates with a film thickness of less than 3 μm show good adhesion in the temperature range from room temperature to 1100°C. The mean value of the lattice parameter a0 of CeO 2 for samples on Al 2 O 3 substrates is 5.395 Å.

Aug 19, 2019 · Crucially, the effect of morphology, crystal size, Ce 4+ /Ce 3+ species, oxygen vacancies derived from the removal of lattice oxygen (O latt) species in CeO 2 and lattice defect sites on CO...

Feb 15, 2024 · Herein, a heterostructured RuO 2 –CeO 2 electrocatalyst was constructed by using a lattice-matching strategy. The interfacial Ru–O–Ce bridge structure provided a channel for electron transfer between Ru and Ce, creating a lattice stress that …

Oct 1, 1993 · The lattice parameter of the cerium dioxide was determined from measurements of the {620} peak position with the position being corrected for systematic instrumental errors using a correction based on the {420} peak position of a platinum powder internal standard.

Benefitting from the acid-base properties modulated by the electron-enriched lattice oxygen, the optimized CeO 2 catalyst exhibited a much higher DMC yield of 22.2 mmol g -1 than the reported metal-oxide-based catalysts at the similar conditions.