Preparation of Graphene Oxide Decorated Fe₃O₄@SiO₂ Nanocomposites with Superior Adsorption Capacity and SERS Detection for Organic Dyes

Figure 5

(a) Photographs of MB solution treated with Fe₃O₄@SiO₂-GO and the response to an external magnetic field. The effect of (b) the sample pH value, (c) the amount of sorbent, and (d) the contact time on the adsorption capability of MB.

(a)

(b)

(c)

(d)