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Figure 8
(a) Amount of oxidized Pt, (b) reduced Pt and (c) the distribution of other materials measured at a temperature of approximately 290°C. (d, e) Single XANES profiles extracted from areas as indicated in the upper images. (f) R-factor map indicating differences in fit quality depending on the amount of Pt in a pixel (scaled between 0 and 1.5 × 10−3 to enhance visibility). (g) Fourier-ring-correlation analysis using two subsequent XANES images before ignition yields a spatial resolution of 18.6 µm. In comparison, the spatial resolution of the raw transmission images is about 2.2 µm as indicated in the lower FRC spectrum.

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