Fig. 1: Structure characterization of monolithic ordered macroporous (OM) PtSA/CeZrO2. | Nature Communications

Fig. 1: Structure characterization of monolithic ordered macroporous (OM) PtSA/CeZrO2.

From: Ultra-stable low-coordinated PtSA/CeZrO2 ordered macroporous structure integrated industrial-scale monolithic catalysts for high-temperature oxidation

Fig. 1

a Photograph of an OM catalyst integrated commercial cordierite honeycomb monolith. b Large-area Scanning Electron Microscopy (SEM) investigation of the OM catalyst integrated inside the monolithic honeycomb channels, showcasing both cross-sectional and top views, which reveal a uniform coverage of the OM catalyst throughout the entire 12 cm-long honeycomb channels. c Schematic diagram illustrating the atom trapping method (Aging conditions: 800 °C for 50 h in air). d k2-weighted Fourier-transformed Extended X-ray Absorption Fine Structure (EXAFS) spectra of fresh PtNP/CeZrO2 and aged PtSA/CeZrO2. Pt foil and PtO2 are employed as references. e, f Annular Dark Field Scanning Transmission Electron Microscopy (ac-HADDF STEM) images of fresh PtNP/CeZrO2 (e) and aged atomically dispersed PtSA/CeZrO2 (f), where PtNP and PtSA represent Pt nanoparticles and Pt single atoms, respectively.

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