Development of ZrO₂‐MgO nanocomposite powders by the modified sol‐gel method

Abstract

The ZrO2‐MgO nanocomposites were synthesized using a new sol‐gel method with sucrose and tartaric acid as a gel agent. The samples were characterized by thermal analysis (TG/DTA), X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), energy‐dispersive X‐ray mapping (EDX mapping), and Ultraviolet‐visible spectroscopy (UV‐vis). The results showed that the cubic phase of ZrO2‐MgO was formed in the presence of both gel agents. The average particle size of the samples synthesized with sucrose was lower (30 nm) than that of tartaric acid (50 nm). Finally, the formation mechanism and the optical properties of zirconia‐magnesia have been discussed.

Preparing filled CoSb3 skutterudites at 500 °C by a self-reduction sol–gel route

“…It is mainly influenced by the gases generated during the reduction process, which can affect the preferential binding direction of Co and Sb grains. 23 According to the EDS results shown in the inset in Fig. 3(b)-(d), the ratio of Co and Sb is consistent with the stoichiometric ratio of CoSb 3 , and the amorphous carbon may originate from the decomposition of mixedacid.…”

Synthesis and Characterization of Zinc and Vanadium Co-Substituted CoFe2O4 Nanoparticles Synthesized by Using the Sol-Gel Auto-Combustion Method

“…For instance, these nanoparticles are often synthesized by various routes such as co-precipitation [ 25 , 26 ], ultrasound irradiation, solution combustion [ 27 ], solid-state reaction [ 28 ], the conventional ceramic method [ 29 ], ball milling [ 30 ], and sol-gel auto combustion [ 31 ] methods. Among these methods, the sol-gel method is known as a suitable technique to produce nanoparticles with high homogeneity, proper microstructure, and other suitable properties [ 32 , 33 , 34 ].…”

Auto-combustion synthesis and characterization of zirconium oxide nanoparticles for removal of crystal violet dye from aqueous solution

“…The major bands in the range of 500-800 cm -1 (at 530, 600, 580, 700, 780 cm -1 ) in the spectra, are related to the tetragonal and monoclinic structure of the obtained ZrO 2 stretching vibration modes. The broadband at 3442 cm -1 and the sharp band at 1639 cm -1 corresponded to the stretching and bending mode of hydroxyl groups (O-H) or/and water molecules on the surface of the synthesized ZrO 2 nanoparticles [18][19][20][21].…”