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Table 2 Gaussian fitting for percentage of Ce 3+ of pure CeO 2 nanospheres before and after Ar annealing

From: Synthesis, characterization, and magnetic properties of monodisperse CeO2 nanospheres prepared by PVP-assisted hydrothermal method

Sample Peak position (eV) Peak area (eV) Percentage of Ce3+(%)
Before Ar annealing After Ar annealing Before Ar annealing After Ar annealing Before Ar annealing After Ar annealing
CeO2 at 200 °C for 12 h 5737.881 5738.471 5.128 5.672 7.8 12.4
5730.733 5731.222 3.791 3.603   
5724.617 5725.931 0.761 1.308   
CeO2 at 160 °C for 24 h 5737.245 5738.888 6.734 4.703 9.8 10.4
5729.911 5731.695 3.549 3.427   
5726.128 5726.769 1.013 0.949   
CeO2 at 200 °C for 24 h 5738.440 5736.924 5.154 5.713 13.7 13.3
5731.205 5729.691 3.799 3.741   
  5726.465 5724.987 1.427 1.445