Synthesis and Characterization of Stable and Crystalline Ce1-xZrxO2 
Nanoparticle Sols

Deshpande, Atul. S.; Pinna, Nicola; Beato, Pablo; Antonietti, Markus; Niederberger, Markus

doi:10.1021/cm040155w

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Synthesis and Characterization of Stable and Crystalline Ce_1-xZr_xO₂ Nanoparticle Sols

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Deshpande, Atul. S.
Max Planck Society;

Pinna, Nicola
Max Planck Society;

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Beato, Pablo
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

Antonietti, Markus
Max Planck Society;

Niederberger, Markus
Max Planck Society;

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Citation

Deshpande, A. S., Pinna, N., Beato, P., Antonietti, M., & Niederberger, M. (2004). Synthesis and Characterization of Stable and Crystalline Ce_1-xZr_xO₂ Nanoparticle Sols. Chemistry of Materials, 16(13), 2599-2604. doi:10.1021/cm040155w.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-0C12-C

Abstract

Ce_1-xZr_xO₂ nanoparticle sols (x = 0-1) are synthesized by hydroxide coprecipitation of a mixed precursor solution of cerium ammonium nitrate and zirconyl chloride followed by redispersion in an aqueous medium by sonication using nitric acid as the peptizing agent. The obtained sols are highly concentrated and stable for weeks. Analytical ultracentrifugation
measurements show a particularly narrow particle distribution with an average particle size of about 3.5 nm for pure CeO₂ and 2.5 nm for pure ZrO₂ nanoparticles. Wide-angle X-ray scattering (XRD) as well as high-resolution transmission electron microscopy give evidence that all of the as-synthesized nanoparticle sols with a ceria content larger than 20
mol % are well crystalline. The formation of a solid solution with an increasing amount of Zr was monitored by XRD and Raman spectroscopy.