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

Figure 2

FTIR spectra of GO, Fe₃O₄, Fe₃O₄@SiO₂, Fe₃O₄@SiO₂-NH₂, and Fe₃O₄@SiO₂-GO.