Synthesis and Characterization of Mixed Iron-Manganese Oxide Nanoparticles and Their Application for Efficient Nickel Ion Removal from Aqueous Samples

Figure 1

Morphology changes induced by the presence of Mn in the nanostructures’ formation highlighted by transmission electron microscopy. The stoichiometry ratio Fe : Mn was (a) 100 : 0, (b) 88 : 12, (c) 75 : 25, and (d) 50 : 50. Scale bar = 20 nm.

(a)

(b)

(c)

(d)