Optimized Synthesis of FeS Nanoparticles with a High Cr(VI) Removal Capability

Figure 4

TEM images of (a) bare FeS (500 mg/L) without a stabilizer, (b) synthesized FeS nanoparticles (500 mg/L) with CMC as a stabilizer (0.15 wt.%), and (c) and (d) enlarged representative nanoparticles with a shell-core structure.