Abstract
Recently, the GDC samples have been synthesized as promising materials for applying in solid oxide fuel cells. In the present research, two different kinds of gadolinium-doped ceria (GDC) nano-composites were prepared by a wet-chemical method based on the sol–gel process and new precursors such as CeLH 2 , (pyda.H)2[(Ce(pydc)3].2CH3OH and (pyda.H)2[(Gd(pydc)3].2CH3OH, [pydc (2,6-Pyridinedicarboxylic acid), and GdLH 2 , pyda (2,6-diaminopyridine)]. The CeLH 2 and GdLH 2 coordination compounds have been prepared by high-energy ultrasound irradiation. The X-ray powder diffraction (XRD) results showed that the crystal lattice of the compounds (I), (II) was obtained cubic fluorite structures. The scanning electron microscope (SEM) analyses of the compounds (I), (II) indicated that the average grain sizes obtained about 20–30 and 50–70 nm, respectively. The results showed that using high intensity ultrasound can be utilized successfully for the synthesis of supramolecular coordination compounds.
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