%0 Journal Article
%A Mbarek, Fatma
%A Cherif, Ichraf
%A Cherif, Amira
%A Alonso, Jose Maria
%A Morales, Irene
%A Presa Muñoz De Toro, Patricia Marcela De La
%A Ammar, Salah
%T Insights into the synthesis parameters effects on the structural, morphological, and magnetic properties of copper oxide nanoparticles
%D 2023
%U https://hdl.handle.net/20.500.14352/87325
%X The present study aims at the integration of the "oxalic conversion" route into "green chemistry" for the synthesis of copper oxide nanoparticles (CuO-NPs) with controllable structural, morphological, and magnetic properties. Two oxalate-containing precursors (H_2C_2º_4.2H_2O and (NH_4)_(2)C_2O_4.H_2O) and different volume ratios of a mixed water/glycerol solvent were tested. First, the copper oxalates were synthesized and then subjected to thermal decomposition in air at 400 degrees C to produce the CuO powders. The purity of the samples was confirmed by X-ray powder diffraction (XRPD), and the crystallite sizes were calculated using the Scherrer method. The transmission electron microscopy (TEM) images revealed oval-shaped CuO-NPs, and the scanning electron microscopy (SEM) showed that morphological features of copper oxalate precursors and their corresponding oxides were affected by the glycerol (V/V) ratio as well as the type of C_2º_4^2- starting material. The magnetic properties of CuO-NPs were determined by measuring the temperature-dependent magnetization and the hysteresis curves at 5 and 300 K. The obtained results indicate the simultaneous coexistence of dominant antiferromagnetic and weak ferromagnetic behavior.
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