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. 2021 Oct 10;14(20):5948. doi: 10.3390/ma14205948

Figure 6.

Figure 6

TEM images of Fe3O4 MNPs: (a) unfunctionalized MNPs (average medium size of particles 8.5 ± 2 nm); (b) citrate-functionalized MNPs (average medium size of particles 9.5 ± 1 nm); (c) phosphate-functionalized MNPs.