Influence of zinc on the structural and electrical properties of cerium oxide nanoparticles

Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles

“…On the other hand, as the temperature increased, the value of ε was heightened over entire frequency range. These results are similar with previous reported data on the dielectric behavior of the cerium oxide nanoparticles [9,23,25,64,65]. At low frequencies, the dielectric constant exhibited very high values due to the presence of space charge polarization, because the charge carriers accumulated at the grain interfaces and insulating grain boundaries, which provided a high dielectric constant [25,29,64].…”

“…As the frequency increased, the electric dipoles failed to follow the quick electric alternating field, and a constant value was obtained for dielectric constant. Similar frequency dependences of the dielectric constant have been reported elsewhere [9,25,64]. At low frequencies, as the temperature increased, the dielectric constant increased, and at high frequencies, ε remained practically at a constant value (Figure 6) due to the conductivity enhancement and higher charge carrier mobility [10].…”

“…The charge carriers of CeO-1 had an activation energy of 0.54 eV, while for CeO-2, a lower value was found (0.47 eV) (Table 2). The obtained activation energy values for the conductivity were lower than previous reported data [9,29,74]. Based on these investigational data, the present cerium oxide nanostructures can be regarded as possible useful materials for manufacturing capacitors and for use in devices operating at high frequencies.…”

“…Nowadays, cerium oxide is among the most promising transition metal oxides for various applications as a nanomaterial, namely photocatalysis, gas sensors, solar cells, fuel cells, polishing materials, automotive catalytic converters, corrosion protection coatings for metal and alloys, and ultraviolet light detectors [1][2][3][4][5][6][7]. This wide range of applications is based on the unique properties of cerium oxide, such as high chemical stability, low toxicity, high oxygen storage ability, high transparency in visible range, low ionization potential, good redox performance, good lattice compatibility with Si, ease and costeffective preparation, and others [1,5,[8][9][10].…”

Effect of Cerium-Containing Hydroxyapatite in Bone Repair in Female Rats with Osteoporosis Induced by Ovariectomy

“…In addition, the presence of the photoemission signal of Ce 3d in the XPS survey spectrum of Ce-HA, confirm that the desired sample was obtained. According to the literature, Ce 3d XPS spectrum is quite complex and more complicated than other materials due to hybridization between Ce 4f and O 2p levels [50]. In Ce 3d XPS spectrum for Ce(IV), six well-defined peaks, which are associated to 3d 5/2 and 3d 3/2 doublets, are expected.…”