Figure 2
(a) Ce3+ concentration obtained from Ce L3-edge XANES data of samples Y1, Y2 and a 300oC-annealed CeO2 sample with different X-ray irradiation times. (b) Plot of the Ce3+ concentration versus photon energy for the as-made CeO2 sample. (c) Plot of the Ce3+ concentration versus photon flux for the as-made CeO2 sample. |