Towards the surface hydroxyl species in CeO₂ nanoparticles

Abstract

X-ray absorption experiments at Ce L3 and M5 edges and theoretical calculations demonstrate that in addition to the nanoceria charge stability, the formation of hydroxyl groups at the surface affects the chemical performance of nanomaterials.

Ceria-Containing Hybrid Multilayered Microcapsules for Enhanced Cellular Internalisation with High Radioprotection Efficiency

“…Citrate-stabilised cerium oxide nanoparticles were 2–2.5 nm in size ( Figure 1 a), with a negative zeta potential ( Figure 1 c) and a hydrodynamic radius of about 5–7 nm when dispersed in water ( Figure 1 b). Citrate-stabilised cerium oxide nanoparticles demonstrated high enzyme-like antioxidant activity, as we have shown previously [ 39 , 40 ]. The scheme of antioxidant activity of nanoceria is shown in Figure 1 d.…”

Insight into the structure–property relationship of UO2nanoparticles

“…41 Later, the absence of the Ce(III) oxidation state was confirmed for NPs even for 2nm particles. 42,43 This could lead to the assumption that there is a similar trend for all highly-hydrolyzed tetravalent Ln or An cations. However, to the best of our knowledge, the tetravalent oxidation state for UO 2 NPs has never been proven.…”

Size Dependence of Lattice Parameter and Electronic Structure in CeO2 Nanoparticles

“…(Left) Raman spectra (Right) T2g position and width as a function of the particle size Comparison of experimental and calculated Ce LIII HERFD-XANES spectra of both 2 nm CeO2 and bulk CeO2. Calculated data shown here are reproduced from T.Plakhova et al21 .…”