Solventless synthesis of cerium oxide nanoparticles and their application in UV protective clear coatings

Abstract

Solventless synthesis of metal oxide nanoparticles.

Revealing the Effect of Synthesis Conditions on the Structural, Optical, and Antibacterial Properties of Cerium Oxide Nanoparticles

“…It can be observed that the crystallite size increased when the preparation of cerium oxide nanoparticles was made at room temperature and in the presence of NH 4 OH as precipitating agent instead of NaOH. Using the Miller indices for the (111) plane, the lattice constant, a, can be estimated by the relation (1). The calculated values of the lattice constant are given in Table 1.…”

“…Some properties, such as quantum confinement as well as high surface-to-volume ratio, induced by the nanosized dimensions of the cerium oxide, together with the low redox potential of the Ce 4+ /Ce 3+ couple, determine heterogeneous processes at the nanoparticle surface in contact with air or liquid. Industrial applications of the materials based on cerium oxide nanoparticles include UV protective materials [1], oxygen sensor and storage [2,3], catalysis [4,5], and solid oxide fuel cells [6,7]. Reversible redox reaction of the Ce 4+ /Ce 3+ couple determines the pro-or antioxidant properties of cerium oxide nanomaterials with potential utilizations in medicine, playing a dual role as a cell protector against oxidative stress, but also as a sensitizer in cancer radiotherapy or in antibacterial applications [8,9].…”

Synthesis and characterization of nanoceria for electrochemical sensing applications

“…Here, morphology (size, shape, distribution) of nanoceria growth is built by a nucleation dissolution recrystallization step mechanism, depending on the reaction time. 48 Fig. 6A and B show nanoceria with average size of 2 nm formed 0.7 h decomposition time.…”

“…The decomposed product was dissolved in hexane and sonicated gently to produce colloidal ceria nanoparticles. 48 The nanocrystallite cerium oxide powders were also prepared from precursor nanopowders by thermal decomposition. The Ce-propionate powder precursor was prepared by dissolved cerium( iii ) acetate sesquihydrate in the methanol : propionic acid (with a 1 : 2 ratio), stirring at 60 °C, then dried at 120 °C in air.…”

Molecular dynamics investigation of the structural and energetic properties of CeO2–MOx (M = Gd, La, Ce, Zr) nanoparticles

“…Here, "∞" can be set as any large number on the calculations without direct impact on the potential values since C = 0 for the M -M interactions. 42 To achieve our goals, we considered two particles size, namely, 500 and 864 cations with the appropriate number of oxygen anions, which yields oxide particles with diameters similar with experimental observations, 43,44 which are large enough to show ordered core region, internal nucleation, and domain walls. Systems with that size are not affordable by ab initio MD calculations, and hence, all MD simulations were based on atomistic force field simulations, as described below.…”