Figure 2 | Scientific Reports

Figure 2

From: Removal of silver nanoparticles by mussel-inspired Fe3O4@ polydopamine core-shell microspheres and its use as efficient catalyst for methylene blue reduction

Figure 2

(a) FT-IR spectra of Fe3O4, Fe3O4@PDA, and AgNPs-Fe3O4@PDA. (b) X-ray diffraction patterns of Fe3O4, Fe3O4@PDA, and AgNPs-Fe3O4@PDA. (c) TGA data of Fe3O4, Fe3O4@PDA, and AgNPs-Fe3O4@PDA. (d) Magnetic curves of Fe3O4, Fe3O4@PDA, and AgNPs-Fe3O4@PDA, inset photographs: separation of Fe3O4@PDA (upper left) and AgNPs-Fe3O4@PDA (lower right) from aqueous solution by using an external magnet.

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