Fig. 4: XAFS of the Au L3-edge.
From: Dynamic behaviour of platinum and copper dopants in gold nanoclusters supported on ceria catalysts

a, b XANES spectra at Au L3-edge of the nanocluster catalysts a before the reaction (without pretreatment) and b after WGS reaction (used); c EXAFS R-Space of the catalysts after both pretreatments (pretO2 and pretH2) in dotted lines and after WGS reaction (solid lines) and Au25 cluster and Au foil as references.