Fig. 3
From: Mackinawite nanozymes as reactive oxygen species scavengers for acute kidney injury alleviation
ROS scavenging ability of GFeSNs. GFeSN scavenging ability against ·OH (a), DPPH (c), ABTS (e), O2− (g), and H2O2 (h). The ultraviolet–visible (UV–vis) spectra of free radicals ·OH (b), DPPH (d), and ABTS (f) incubated with GFeSNs at different concentrations (0–80 μg/mL). i O2 generation from H2O2 catalyzed by GFeSNs. j Images of GFeSNs (0–80 μg/mL) catalyzing formation of O2 bubbles. ESR spectra of GFeSNs reacted with ·OH (k) and O2•− (l)