Fig. 1: Structure characterization of Ru1/CeO2 and Run/CeO2 catalysts.
From: A single site ruthenium catalyst for robust soot oxidation without platinum or palladium
a XRD patterns of all samples and standard card of CeO2. b EXAFS fitting results in R space and the Ru K- edge for Ru1/CeO2 and Run/CeO2 catalysts with RuO2 and Ru foil. The shell radii (R) of Ru-O and Ru-O-Ru are marked. c The Ru K-edge XANES profiles. d and e In-situ DRIFT spectra of CO adsorption at 50 oC for the Ru1/CeO2 and Run/CeO2 catalysts with the extension of purge time (N2 flow, 30 mL min-1). f STEM-ADF image of Ru1/CeO2 catalyst with scale bars of 2 nm. The yellow circles represent atomically dispersed Ru sites. g STEM EDX mapping of Ru1/CeO2 catalyst (Purple, Ru; Orange, O; Mazarine, Ce).
