Abstract

CASANOVA OZUNA, Pablo Javier et al. Synthesis of copper oxide nanoparticles by the chemical precipitation method: crystallographic characterization by x-ray diffraction and Rietveld refinement. Rev. Soc. cient. Parag. [online]. 2025, vol.30, n.2, pp.44-55. ISSN 0379-9123.  https://doi.org/10.32480/rscp.2025.30.2.4455.

This study presents the synthesis of copper oxide nanoparticles (NPsCuO) employing the chemical precipitation method, with emphasis on product characterization by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The nanoparticles exhibited a hemispherical morphology with an average diameter of 124 nm, as observed by scanning electron microscopy (SEM). XRD analysis confirmed the formation of a monoclinic phase, with a mean crystallite size of ~22 nm. Rietveld refinement (Chi² = 1.2) and visualization with VESTA revealed a Cu-O distance of 1.96 Å and bond angles of 60.67° and 154.57°. XPS analysis showed Cu 2p₃/₂ (~942.7 eV) and Cu 2p₁/₂ (~962.7 eV) peaks, characteristic of the Cu²⁺ state in CuO. The results confirm the effectiveness of the method to obtain NPsCuO of high purity.

Keywords : nanoparticles; copper oxide; X-ray diffraction; photoelectron spectroscopy; Rietveld refinement.

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