Fig. 1
From: Mackinawite nanozymes as reactive oxygen species scavengers for acute kidney injury alleviation
Preparation of iron sulfide nanoparticles. a Schematic illustration of different iron sulfide nanoparticles. SEM images of CFeSNs (b), DFeSNs (c), GFeSNs (d), and TFeSNs (e). Scale bar = 200 nm. f O2− scavenging ability of four iron sulfide nanoparticles (10 μg/mL). g Identification of hydrogen polysulfides released from four iron sulfide nanoparticles (10 μg/mL) by SSP4 fluorescence probe. h The fluorescence spectra of GFeSNs after incubation with SSP4 for 30 min. i Relative fluorescence responses of 10 μg/mL iron sulfide nanoparticles and 50 μM WSP-5 incubated with or without 4 mM L-cysteine