Hollow cerium nanoparticles synthesized by one-step method for multienzyme activity to reduce colitis in mice

Figure 3 Hollow cerium nanoparticles exhibits good elimination of ∙OH, ∙OOH and reactive oxygen species in vitro. A: The effect of hollow cerium (H-CeO₂) nanoparticles on the formation of ∙OH in the TiO2/UV system; B: Peroxidase activity of H-CeO₂; C: Effects of H-CeO₂ on ∙OOH produced by the xanthine/xanthine oxidase system; D: Dichlorofluorescein Diacetate probe to detect the ability of H-CeO₂ to scavenge reactive oxygen species in HCT116 cells. H-CeO₂: Hollow cerium.