Fig. 1: Structural characterization of Fe-TiO2 catalysts.
From: Ferromagnetic Fe-TiO2 spin catalysts for enhanced ammonia electrosynthesis
a EDS elemental mapping of Fe-TiO2 catalysts. b Aberration-corrected HAADF-STEM image, where a single Fe atom is circled in red color. The inset on the left displays the energy loss spectrum of the selected dashed square. The inset above shows the intensity profiles. c Normalized Fe K-edge XANES spectra of Fe foil, Fe2O3 and Fe-TiO2. The inset shows a local magnification. d Fourier transform of EXAFS spectra of Fe foil, Fe2O3 and Fe-TiO2. e Wavelet transform EXAFS of the k2-weighted k space of Fe-TiO2 catalyst. f The side and top views of the Fe-TiO2 model. Source.
