Abstract
In the present research two different kinds of nickel oxide/gadolinium-doped ceria (NiO–GDC) (I and II) nanocomposites were prepared by means of the sol-gel method. The Ni(II) complex (NiLH 2 ), [Ni(pydc)2·2(pyda·H)·2H2O], [pydc (2,6-Pyridinedicarboxylic acid), pyda (2,6-diaminopyridine)], and Ni(NO3)2·6H2O have been used as precursors. Characterization of the products was carried out by Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray powder diffraction, zeta potential, thermogravimetric analysis, and nitrogen adsorption–desorption Brunauer, Emmett, and Teller measurements. The X-ray powder diffraction results showed that the crystal lattice of compound (I) was obtained as a cubic fluorite structure and was found to have an average crystalline size of 48–63 nm. The comparison of the zeta potential of compounds (I) and (II) has shown that compound (I) can carry a more positive charge and is almost stable. The scanning electron microscope and Brunauer, Emmett, and Teller analysis of compound (I) revealed large homogeneous agglomerated pores and surface area. The results show that if compound (I) is used in solid oxide fuel cells, it could be a suitable material for the anode of solid oxide fuel cells.
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The authors are grateful to the Iranian National Science Foundation (INSF) and Iranian Research Organization for Science and Technology (IROST).
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Ghamari, S., Ranjbar, M. & Nabitabar, M. Preparation and characterization of nanopowder nickel oxide/gadolinium-doped ceria via the sol-gel method by NiLH2 precursor. J Sol-Gel Sci Technol 81, 236–246 (2017). https://doi.org/10.1007/s10971-016-4182-1
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DOI: https://doi.org/10.1007/s10971-016-4182-1