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. 2015 Oct 22;6:8675. doi: 10.1038/ncomms9675

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(a) k³-weighted EXAFS derived in situ from the 5 wt% Pt/Al₂O₃ catalyst along with theoretical fit (red); (b) the corresponding Fourier transform (again with the theoretical fit in red). (c) Comparison of Pt L₃ edge X-ray absorption near edge structure from this sample with that from Pt foil (red) and PtO₂ (blue). The sample spectrum is also compared with linear combinations (80% Pt⁰ and 75% Pt⁰ as indicated) of these two reference spectra. (d) The temporal variation observed in the Pt L₃ white line intensity during exposure of the catalyst to 5 vol% CO/Ar and then 21 vol% O₂/Ar.