Figure 3
(a) Comparison of Ni K-edge X-ray absorption spectra collected experimentally from the as-prepared Ni–P nanoparticles (Ni–P NPs) and the Ni foil, as well as the spectrum of Ni3P calculated theoretically from the crystalline Ni3P. An enlarged picture near the absorption edge of the three spectra is also displayed (b). (c) Comparison of Ni K-edge Fourier transform spectra corresponding to the three Ni K-edge X-ray absorption spectra in (a). (d) Comparison of Ni K-edge Fourier transform spectra between the experimental data and fitting curve with Ni–Ni and Ni–P two sub-shells for the as-prepared Ni–P nanoparticles. (e) Comparison of Ni K-edge XAFS spectra between the experimental data and fitting curve with Ni–Ni and Ni–P two sub-shells for the as-prepared Ni–P nanoparticles. |