A Fluorescent Sensor for Zinc Detection and Removal Based on Core-Shell Functionalized Fe₃O₄@SiO₂ Nanoparticles

Figure 2

FT-IR spectra of (a) Fe₃O₄@SiO₂, (b) Fe₃O₄@SiO₂-APTES, and (c) Fe₃O₄@SiO₂-CAAQ NPs.