Cerium Oxide Nanoparticles: Potential for Revolutionizing Treatment of Diseases

Rzigalinski, Beverly A.; Carfagna, Charles S.

doi:10.1007/978-3-662-59600-5_8

Cited by 2 publications

(1 citation statement)

References 71 publications

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“…It is especially of paramount importance today, for the economic viability of rare-earth elements (REE) recycling processes [3]. Controlling morphology is particularly challenging in the case of cerium-based particles for which the electronic structure, that influences the physical and chemical properties (such as intrinsic photoluminescence [4], biological activity [5] and catalytic properties [6]).…”

Section: Introductionmentioning

confidence: 99%

Morphology-Controlled Precipitation of Cerium Oxalate Crystals: The Effect of Water in Nanostructured Solvents

Liaščukienė

Jéhannin²,

Lautru

et al. 2021

J. Phys. Chem. C

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The ability to control the morphology of precipitated cerium oxalate material results in determinate evidence to its final properties. In this study, we demonstrate that surfactant free nanostructured low water solvents have a huge potential for controlling the morphology of a cerium oxalate powder. In this aim, an in-depth investigation of the reaction between cerium nitrate and oxalic acid is carried out, by varying both the relative concentration of the two reagents (around stoichiometric value), and the composition of the water / propanediol / octanol ternary solvent (especially in the low water-content nanostructured domain). Thanks to the complementary of observation methods: microscopy (confocal microscopy with fluorophores, environmental SEM), and X-ray scattering (SAXS, WAXS), we evidenced the role of the solvent on the growth kinetics and directional aggregation of the precipitates -the two major factors determining the final morphology of the particles. Besides the possible confinement effect in nanodroplets, compact "dense-branching" particles, achieved in low water content solvent, unveil the strong role of the surface forces on the aggregation mechanisms. This is consistent with the prevailing capillary forces at water / oil / solid triple points in ternary solvents. These new results confirm the high potential of nanostructured solvents for controlling the size and shape of hydrated precipitated particles.

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