Fig. 2: Structural Characterizations of PtSn/SiO2 + CaCO3 tandem catalyst. | Nature Communications

Fig. 2: Structural Characterizations of PtSn/SiO2 + CaCO3 tandem catalyst.

From: Ethane dehydrogenation over CaCO3-mediated tandem catalysts

Fig. 2

a Schematic spatial distribution of PtSn/SiO2 + CaCO3. b–h HAADF-STEM images (b, c), EDX-mappings (d–g) and HRTEM image (h) of PtSn/SiO2 + CaCO3. The inset in (c) shows the size distribution of Pt3Sn nanoparticles. The inset in (h) shows Inverse Fast Fourier Transform (IFFT) processing of single Pt3Sn nanoparticle from the selected square area. i, j Normalized Pt L3-edge XANES spectra (i) and k2-weighted Pt L3-edge EXAFS spectra (j) of PtSn/SiO2, PtSn/SiO2 + CaCO3 and reference samples.

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