fig2
Figure 2. (A) XRD patterns, (B) Raman spectra, and (C) BET analysis surface area of Fe3C@BNC, Fe3C@NC, and BNC; High-resolution XPS spectra of (D) N 1s, (E) B 1s, and (F) Fe 2p3/2 for the three samples. XRD: X-ray diffraction; BET: Brunauer-Emmett-Teller; BNC: B, N-doped porous carbon; XPS: X-ray photoelectron spectroscopy.
