Fig. 2: Synthesis and structural characterization of single-atom sites Pt catalyst on chitin nanowires (SS-Pt-CSNs).
From: Dynamic boron-doping switched chitin-based single-atom Pt catalyst for chemo-selective hydrogenation

a SEM morphology, b TEM, c HAADF-STEM, and d elemental mapping images of SS-Pt-CSNs, corresponding to carbon (yellow) (d1), nitrogen (blue) (d2), oxygen (red) (d3) and platinum (green) (d4). e Pt L3-edge XANES. f Fourier-transformed EXAFS spectra. g The fitting curve of SS-Pt-CSNs.