Fig. 1: Characterization of Pt/CeO2 - High Surface (comparative example).
From: Overcoming activity/stability tradeoffs in CO oxidation catalysis by Pt/CeO2
a Schematic illustration of the dynamic behavior of the Pt/CeO2-HS sample after various thermal treatments. Red, oxygen; yellow, cerium; gray, metallic Pt; blue, cationic Pt b, c Pt L3-edge XANES, and the corresponding magnitude of the k2-weighted FT-EXAFS spectra, respectively, after calcination in O2 at 450 °C, reduction in CO at 300 °C, and reaction with a 8:1 O2/CO mixture at 500 °C (sequential treatments); for comparison purposes, XAS spectra of PtO2 and a Pt foil are also provided d Pt 4 f XPS spectra of the same samples. e–g the corresponding HAADF-STEM images.
