Fig. 3. (A) TEM image and (B) HADDF image of MOFs-NZVI reacted with As(iii), elemental mappings of (C) Fe, (D) As and (E) Zr (mMOFs-NZVI = 0.15 g, mass fraction of NZVI = 16.7%, CAs(iii) = 20 mg L−1, VAs(iii) = 100 mL, pH = 7.0, T = 25 °C).
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