Research Article

Supercritical CO2 Assisted Synthesis of EDTA-Fe3O4 Nanocomposite with High Adsorption Capacity for Hexavalent Chromium

Figure 4

Microscopic images of nanoparticles: (a) TEM image of IONPs at 100 nm, (b) TEM image of IONPs at 200 nm, (c) SEM image of MIONPs at 4.00 Kx magnification and 1 μm scale, and (d) SEM image of MIONPs at 50x magnification and 100 μm scale.
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