fig2
Figure 2. XRD patterns of nZVI before and after reaction with Cu2+ showing the transformation of Cu2+ and Fe0 (Reaction conditions: initial concentration = 5 mmol/L; nZVI dosage = 0.5 g/L; initial pH = 4.0 ± 0.1; reaction time = 2 h). XRD: X-ray diffraction.
