Converting Ceria Polyhedral Nanoparticles into Single-Crystal Nanospheres

@article{Feng2006ConvertingCP,
  title={Converting Ceria Polyhedral Nanoparticles into Single-Crystal Nanospheres},
  author={Xiangdong Feng and Dean C. Sayle and Zhong Lin Wang and M Sharon Paras and Brian P. Santora and Anthony C. Sutorik and Thi X. T. Sayle and Yi Yang and Yong Ding and Xudong Wang and Y. S. Her},
  journal={Science},
  year={2006},
  volume={312},
  pages={1504 - 1508}
}
Ceria nanoparticles are one of the key abrasive materials for chemical-mechanical planarization of advanced integrated circuits. However, ceria nanoparticles synthesized by existing techniques are irregularly faceted, and they scratch the silicon wafers and increase defect concentrations. We developed an approach for large-scale synthesis of single-crystal ceria nanospheres that can reduce the polishing defects by 80% and increase the silica removal rate by 50%, facilitating precise and… 

Facile synthesis of ceria rhombic microplates

Interest in the fabrication of inorganic particles with controlled size and shape is driven by their potential unique and tunable physical properties and the desire to engineer advanced bulk

Solvothermal synthesis of cerium oxides

Self-assembly of cerium oxide nanostructures in ice molds.

This research suggests a very simple, green chemical route to guide the formation of one- and three-dimensional self-assembled nanostructures through self-assembly by exploiting natural phenomena, such as voids formed during freezing of water.

Redispersible hybrid nanopowders: cerium oxide nanoparticle complexes with phosphonated-PEG oligomers.

Two key attributes of the tailored sol are underscore: strong UV absorption capability after functionalization and ability to redisperse after freeze-drying as powder in aqueous or organic solvents in varying concentrations as singlet nanocolloids.

A lamellar ceria structure with encapsulated platinum nanoparticles

A novel lamellar feather-like CeO2 structure has been fabricated by using a triblock copolymer as the structure-directing agent. This material was characterized in detail by X-ray diffraction,

Nanostructured ceria-based materials: synthesis, properties, and applications

The controllable synthesis of nanostructured CeO2-based materials is an imperative issue for environment- and energy-related applications. In this review, we present the recent technological and
...

References

SHOWING 1-10 OF 21 REFERENCES

Polyhedral Shapes of CeO2 Nanoparticles

Ceria nanoparticles are a widely used nanomaterial for applications in catalysts, fuel cell, and microelectronics. An important factor that influences the performance of CeO2 is the particle shape.

Ceria nanoparticles: Size, size distribution, and shape

Nanocrystalline ceria particles have been prepared by mixing aqueous solutions of cerium nitrate and hexamethylenetetramine at room temperature. The smallest size of nanoparticles synthesized is 2

Low‐Temperature Synthesis of Praseodymium‐Doped Ceria Nanopowders

Praseodymium-doped ceria (CeO 2 ) nanopowders have been synthesized via a simple but effective carbonate-coprecipitation method, using nitrates as the starting salts and ammonium carbonate as the

Low-temperature preparation and structural characterization of Pr-doped ceria solid solutions

We report a method for preparing Pr-doped ceria by pyrolysis at 600 °C of aerosols consisting of aqueous solutions of Ce(III) nitrate and Pr(III) chloride. This procedure involves an important

Synthesis and characterization of praseodymium-doped ceria powders by a microwave-assisted hydrothermal (MH) route

Nanocrystalline Pr-doped ceria powders were prepared for the first time by a microwave-assisted hydrothermal route. The effect of the microwave treatment in relation to the conventional hydrothermal

Preparation and Spherical Agglomeration of Crystalline Cerium(IV) Oxide Nanoparticles by Thermal Hydrolysis

Crystalline cerium(IV) oxide nanoparticles with a cubic fluorite structure could be synthesized from cerium(IV) ammonium nitrate solutions with a relatively high concentration of cerium(IV) (such as

Microemulsion-based synthesis of CeO(2) powders with high surface area and high-temperature stabilities.

The latter cerias could be considered as appropriate components for total oxidation (combustion) catalysts for ceria powders synthesized in heptane-microemulsified aqueous solutions stabilized by AOT- or (DDAB + Brij 35)-stabilized microemulsions to assist in formation of crystallites exposing surfaces of large specific areas.

Cerium oxide nanoparticles: Size-selective formation and structure analysis

Nanoparticles of cerium oxide with a narrow size distribution (±15%) are prepared by mixing cerium nitrate solution with an ammonium reagent. High-resolution transmission electron microscopy (TEM)