Fig. 4: Chemical characterisations of the Ni decorated Pt nanoparticles on perovskite fibres.
From: Synergistic growth of nickel and platinum nanoparticles via exsolution and surface reaction
a Ni K-edge XANES spectra, (b) Ni K edge EXAFS Fourier–transform spectra, (c) Pt L3-edge XANES spectra, (d) Pt L3-edge EXAFS Fourier–transform spectra (Ni foil, NiO, Ni(NO3)2 for Ni K edge and Pt foil, PtO2, Pt/Al2O3 for Pt L3-edge as reference samples), and XPS analysis of (e) Pt 4 f and (f) O 1 s regions (LCNT and LCT-Pt fibres reduced at 800 oC as background references), corresponding to the samples of LCNT-Pt fibres subsequently reduced at 400 oC, 600 oC, and 800 oC. OL and Os are lattice oxygen and surface oxygen species, respectively.
