Synthesis of Three-Dimensional Fe₃O₄/Graphene Aerogels for the Removal of Arsenic Ions from Water

Figure 3

(a) XPS spectrum of Fe₃O₄/GAs, (b) a detailed Fe 2p spectrum, (c) a C 1s spectrum of Fe₃O₄/GAs and the inset shows a C 1s spectrum of GO, and (d) a O 1s spectrum of Fe₃O₄/GAs.

(a)

(b)

(c)

(d)