Polyol-Mediated Synthesis of Hexagonal LaF₃ Nanoplates Using NaNO₃ as a Mineralizer

Abstract

Hexagonal LaF 3 nanoplates have been successfully prepared via a polyol-mediated route with ethylene glycol (EG) as solvent. NaNO 3 , which was introduced into the reaction system as a mineralizer, played an important role in the formation process of these nanoplates. The size of the as-prepared nanoplates could be tuned by changing the NaNO 3 content and the NH 4 F content. A possible formation mechanism of these nanoplates has been proposed. The effects of other alkali metal nitrates (LiNO 3 , KNO 3 , RbNO 3 and CsNO 3 ) and solvents (water, methanol, diethylene glycol, and glycerol) on the products have also been explored. The increased chemical potential caused by the addition of NaNO 3 in the reaction system made LaF 3 nanoplates formed initially unstable and transform into stable regular hexagonal LaF 3 nanoplates with a bigger size by a slow dissolution-recrystallization process.

β-Cyclodextrin-assisted preparation of hierarchical walnut-like CeOHCO3 and CeO2 mesocrystals

“…Increasing researches show additive organic agents such as surfactant, complexing agent and polymer significantly influence the assembly and morphology of inorganic nanostructures [32]. ␤-CD may also be used as an assistant agent in preparation process of inorganic nanostructures.…”

Glycine-assisted hydrothermal synthesis of single-crystalline LaF3:Eu3+ hexagonal nanoplates

“…Wang et al [24] have synthesized water-soluble LaF 3 luminescent nanoparticles using chitosan as the capping agent and successfully overcome the shortcomings mentioned above. Qin et al [25] have fabricated hexagonal LaF 3 nanoplates via a polyol-mediated route with NaNO 3 as a mineralizer. However, a simple, low-cost and good biocompatible synthetic technique is still needed to develop for the fabrication of LaF 3 nanostructures.…”

Synthesis and Oxygen Storage Capacity of Two‐Dimensional Ceria Nanocrystals

“…[40] Therefore, high-quality ceria nanocrystals selectively exposing different low Miller-index surfaces, are crucial to enabling experiments that resolve the controversy.Here we report a simple, robust solution-phase synthesis of ultrathin ceria nanoplates in the presence of mineralizers. [41] The morphology of nanoplates can be easily controlled by changing reaction parameters, such as precursor ratio, reaction time, etc. In addition, we also prepare ceria nanomaterials in various 3D morphologies by hydrothermal [21] and combustion [42] methods.…”