Figure 4 | NPG Asia Materials

Figure 4

From: Organic-inorganic hybrid PtCo nanoparticle with high electrocatalytic activity and durability for oxygen reduction

Figure 4

Co and Pt electronic structures in catalysts. (a) Co L-edge NEXAFS and (b) Pt L3-edge XANES spectra of PtCo/C and PtCo/C-PNIPAM. The inset in b is an enlargement of the white line absorption region. Dotted yellow arrows indicate the change of the spectra. (c) Deconvoluted Co 2p core-level XPS spectra. (d) The ratios of Pt oxidation states (top) and Pt 4f core-level XPS spectra (bottom) of PtCo/C and PtCo/C-PNIPAM. ΔB.E. indicates the difference in binding energies between the main peaks. NEXAFS, near-edge X-ray absorption fine structure; XPS, X-ray photoelectron spectroscopy.

Back to article page