Well-Dispersed Nanoscale Zero-Valent Iron Supported in Macroporous Silica Foams: Synthesis, Characterization, and Performance in Cr(VI) Removal

Figure 2

SEM images of MOSF (a), Ma-NZVI (b), Mb-NZVI (c), and Mc-NZVI(d), respectively.

(a)

(b)

(c)

(d)