Hot Topics and Challenges of Regenerative Nanoceria in Application of Antioxidant Therapy

Figure 6

(a) Sensing H₂O₂ by displacing adsorbed fluorescent DNA from nanoceria. The color of nanoceria is changed in the same process. (b) A fluorescence photo of free FAM-A₁₅ DNA (200 nM), after adding nanoceria (10 μg/mL) and then adding H₂O₂ (10 mM). (c) UV-vis spectra of untreated nanoceria (40 μg/mL) and after reacting with H₂O₂ (0.4 mM). Inset: a photo of the same samples (25x concentrated than the UV-vis sample). (d) Fluorescence spectra of the samples diluted from (b). Used with permission from [36].

(a)

(b)

(c)

(d)