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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.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 5| September 2021| Pages 1518-1527
https://doi.org/10.1107/S1600577521007074
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