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. 2020 Apr 20;15:2583–2603. doi: 10.2147/IJN.S231062

Figure 4.

Figure 4

FE-SEM images of Fe3O4 (a); Fe3O4-APTS (b); Fe3O4/SiO2/APTS~Schiff base-Cu(II) nanoparticles (c).