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.2019 Aug 27;9(46):26825-26830.
doi: 10.1039/c9ra04636d. eCollection 2019 Aug 23.

Low temperature synthesis and characterization of single phase multi-component fluorite oxide nanoparticle sols

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Low temperature synthesis and characterization of single phase multi-component fluorite oxide nanoparticle sols

Mariappan Anandkumar et al. RSC Adv..

Abstract

We report for the first time a simple, scalable approach for the synthesis of single-phase multi-component fluorite oxide nanoparticle sols: Gd0.2La0.2Y0.2Hf0.2Zr0.2O2 (GLYHZ) and Gd0.2La0.2Ce0.2Hf0.2Zr0.2O2 (GLCHZ) using chemical co-precipitation followed by peptization in acidic medium under mild conditions (≤80 °C). High resolution transmission electron microscopy (HRTEM) along with selected area electron diffraction (SAED) studies confirm fully crystalline single-phase cubic fluorite nanoparticles having a particle size of about 2-3 nm with a narrow size distribution was obtained. The powder X-ray diffraction (XRD) and Rietveld refinement studies of samples calcined at 500 °C for 4 hours confirm a single phase solid solution and a lack of secondary phases.

This journal is © The Royal Society of Chemistry.

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Conflict of interest statement

There are no conflicts to declare.

Figures

Fig. 1
Fig. 1. X-ray diffraction pattern of as-synthesized and calcined (a) Gd0.2La0.2Ce0.2Hf0.2Zr0.2O2 and (b) Gd0.2La0.2Y0.2Hf0.2Zr0.2O2 nanoparticles.
Fig. 2
Fig. 2. (a) and (e) HRTEM image, (b) and (f) isolated particle, (c) and (g) SAED pattern, (d) and (h) particle size distribution of GLCHZ-RT and GLYHZ-RT respectively (scale bar in image (b) and (f) corresponds to 2 nm).
Fig. 3
Fig. 3. HRTEM images of (a) GLCHZ and (b) GLYHZ calcined at 500 °C for 4 h and its corresponding SAED patterns (c and d).
See this image and copyright information in PMC

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