fig2

Figure 2. Material Characterization. (A) HRTEM image of Fe@MoS₂. (B) STEM image, and (C) the corresponding EDS elemental mappings of Fe@MoS₂, (D)XANES spectra of the Fe K-edge in Fe foil, FeO, Fe₂O₃, and Fe@MoS₂, (E) FT-EXAFS spectra of the Fe K-edge in Fe foil, FeO, and Fe@MoS₂. (F) XAFS fitting result of Fe@MoS₂ at R space. Inset: Atomic illustration of Fe@MoS₂ (Mo atoms: purple; S atoms: yellow; Fe atoms: red).