Fig. 2: X-ray absorption spectra (XAS) studies of Fe1-TiO2 nanostructures.
From: Universal and scalable synthesis of photochromic single-atom catalysts for plastic recycling
a, b Normalized X-ray absorption near-edge structure (XANES) spectra of Fe1-TiO2 and references at Ti K-edge (a) and Fe K-edge (b). c Normalized Fourier transform-extended X-ray absorption fine structure (FT-EXAFS) spectra of Fe1-TiO2, 3.87 at.% Fe1-TiO2, and Fe3O4. The orange and blue regions represent the Fe-O/Ti-O and M-(O)-Ti scattering path, respectively. d Wavelet transform-extended X-ray absorption fine structure (WT-EXAFS) contour plots of Fe1-TiO2, 3.87 at.% Fe1-TiO2, and Fe3O4. The maximum and minimum values on the contour scales represent the magnitude of the WT signal, with the units expressed in arbitrary units. Source data are provided as a Source Data file.
