Solid state synthesis, characterization and physical properties of CeO2-Dy2Ce2O7 nanocomposites

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Khademinia Shahin

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Journal Paper

Paper Information

Journal: ADVANCES IN ENERGY AND MATERIALS RESEARCH Year:2024 | Volume:1 | Issue:3 Page(s): 29-33

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Information Journal Paper

Title

Solid state synthesis, characterization and physical properties of CeO2-Dy2Ce2O7 nanocomposites

Author(s)

Khademinia Shahin | Issue Writer Certificate

Keywords

Dy2Ce2O7

Nanomaterial

Solid State Method

Characterization

Abstract

Dy2Ce2O7 nanopowders were synthesized for the first time via solid-state reactions using Ce(NO3)3·6H2O and Dy2O3 as raw materials in a stoichiometric 1:1 Ce:Dy molar ratio. The synthesized materials were characterized by powder X-ray diffraction (PXRD). Structural analysis, performed using the FullProf program with profile matching and constant scale factors, confirmed a predominant cubic Dy2Ce2O7 structure with the Fd-3m space group. Field-emission scanning electron microscopy (FESEM) revealed that the Dy2Ce2O7 particles exhibited uniform spherical morphologies. Ultraviolet-visible (UV-Vis) spectroscopy demonstrated strong light absorption in the UV-visible region. The direct optical band gaps for samples S1, S2, S3, and S4 were determined to be 2.7 eV, 2.6 eV, 2.5 eV, and 2.4 eV, respectively.

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