Fig. 4: Coordination environment of Pt single atoms determined by XAS analysis. | Nature Communications

Fig. 4: Coordination environment of Pt single atoms determined by XAS analysis.

From: Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity

Fig. 4: Coordination environment of Pt single atoms determined by XAS analysis.The alternative text for this image may have been generated using AI.

a Normalized XANES and b EXAFS magnitude of the Fourier transformed k2-weighted χ(k) data for Pt/CeO2-550 (blue) and Pt/CeO2-800 (red) at the Pt-L3 edge. Pt foil (orange) and PtO2 (black) references were used for XANES linear combination fitting and EXAFS comparison. c Three possible geometries of Pt single atoms at the edge or step sites on CeO2 (110) within Pt/CeO2-550. d The reconstruction of Pt single atoms on CeO2 (110) terrace from six-coordination sites to square-planar like coordination sites within Pt/CeO2-800.

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