fig2
Figure 2. (A) Nitrogen desorption curve and pore distribution diagram of ac-FeCoNiMo and FeCoNi; (B-F) The high-resolution of Co 2p XPS spectra, Fe 2p XPS spectra, Ni 2p XPS spectra, Mo 3d XPS spectra and O 1s XPS spectra of ac-FeCoNiMo and FeCoNi. XPS: X-ray photoelectron spectroscopy.
