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

Figure 2

Particle sizes of synthesized FeS nanoparticles (a) with the dosage of CMC as the stabilizer and (b) with the titration speeds of Na₂S solution. Oscillation rate = 250 rpm, and Na₂S concentration = 0.0426 M. Data plotted as mean of duplicates and the error bars (calculated as standard deviation) indicate data reproducibility.

(a)

(b)