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. 2023 Nov 15;21:426. doi: 10.1186/s12951-023-02175-9

Fig. 1.

Fig. 1

Preparation and Characterization of M-FNM. (A) Synthesis route. (B) TEM image of M-FNM. Inset: HRTEM. (C) Size distribution of M-FNM. (D) Nitrogen adsorption-desorption isotherms of M-FNM. (E) XRD pattern of Mannose, Fe3O4, FNM, and M-FNM. (F) FT-IR spectrum. (G-K) XPS spectra of wide-scan, N 1s Fe 2p, O 1s and C 1s of M-FNM. (M) Dark-field STEM image and EDX elemental mapping of M-FNM nano structures