Figure 5 | Scientific Reports

Figure 5

From: From Khoi-San indigenous knowledge to bioengineered CeO2 nanocrystals to exceptional UV-blocking green nanocosmetics

Figure 5

(a) Diffuse Reflectivity of the CeO2 annealed at various temperatures within the range of 100–700 °C, (b) band structure and the potential O 2p2 − to Ce 4f. 4 + transitions, (c) ROS production of the 700 °C annealed CeO2 (yellow circles) and standard nanoTiO2 (black closed circles), and inset (b) schematic representation of the e–h creation/recombination in TiO2 and CeO2.

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