Fig. 4 | Scientific Reports

Fig. 4

From: Development of a magnetic molecularly imprinted polymer for the removal of dexamethasone from river nile water

Fig. 4

X-ray photoelectron spectroscopy (XPS) survey spectrum of Fe₃O₄@SiO₂–NH₂@GA@APBA, showing characteristic peaks corresponding to B, C, N, O, Si, and Fe, which confirm the successful surface functionalization of the silica-coated magnetite core. The appearance of a distinct boron (B 1 s) signal indicates effective modification of the support. The atomic concentrations obtained from the survey spectrum are listed in the accompanying table.

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