“…This difference can be explained by a resonance Compared with the visible Raman results, the 325 nm excited UV Raman shows a band centered at 590 cm -1 rather than 570 cm -1 and the peak area ratio of the bands at 590 and 460 cm -1 is further increased to 6.7. For Pr/CeO2, the band around 570-590 cm -1 might be related to the intrinsic defects of CeO2 (590 cm -1 ), the Pr 3+ induced oxygen vacancy (570 cm -1 ) and the vibration of the Pr-O species around 550 cm -1 [31]. Due to complexities of the band and the resonance Raman effect (resulting in different peak area ratios between the band at 570-590 and 455 cm -1 for different laser lines), the amount of the defects cannot be directly calculated by Raman results.…”
Section: Characterizations (Xrd Uv-vis Absorption Spectroscopy and Raman Spectroscopy)mentioning
“…This difference can be explained by a resonance Compared with the visible Raman results, the 325 nm excited UV Raman shows a band centered at 590 cm -1 rather than 570 cm -1 and the peak area ratio of the bands at 590 and 460 cm -1 is further increased to 6.7. For Pr/CeO2, the band around 570-590 cm -1 might be related to the intrinsic defects of CeO2 (590 cm -1 ), the Pr 3+ induced oxygen vacancy (570 cm -1 ) and the vibration of the Pr-O species around 550 cm -1 [31]. Due to complexities of the band and the resonance Raman effect (resulting in different peak area ratios between the band at 570-590 and 455 cm -1 for different laser lines), the amount of the defects cannot be directly calculated by Raman results.…”
Section: Characterizations (Xrd Uv-vis Absorption Spectroscopy and Raman Spectroscopy)mentioning
In the present study, the utility of Pr3+/Pr4+ and Bi3+/Bi(0) red-ox couples for oxidation and reduction reactions is demonstrated by synthesizing bismuth substituted PrO1.833 samples following a solution combustion method....
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