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. 2017 Oct 23;7:13844. doi: 10.1038/s41598-017-14098-1

Figure 1.

Figure 1

FTIR spectra of (A) Fe3O4@SiO2@[Hpy]NTf2 (a), Fe3O4@SiO2 (b), Fe3O4 (c) (B) TGA of Fe3O4@SiO2@[Hpy]NTf2.