Fig. 4: Electronic structure characterizations of Ir1/Cu0.3Co2.7O4 with different Ir-Ir distances.
From: Distance effect of single atoms on stability of cobalt oxide catalysts for acidic oxygen evolution

Normalized XANES (a) and EXAFS (b) spectra at the Co K-edge of Cu0.3Co2.7O4 and Ir1/Cu0.3Co2.7O4 with different Ir-Ir distances. Co foil was used as a reference. Normalized XANES (c) and EXAFS spectra (d) at the Ir L3-edge of Ir1/Cu0.3Co2.7O4 with different Ir-Ir distances. Ir foil and IrO2 were used as references.