Fig. 2: STEM characterization of the Pd–Fe3O4–H sample.
From: Harnessing strong metal–support interactions via a reverse route
a HAADF-STEM image of Pd–Fe3O4–H and schematic illustration of the structure (the yellow shell stands for Fe3O4, and grey core stands for Pd); b HR-STEM images of Pd core, c Fe3O4 shell, and d Pd–Fe3O4–H (voids in oxide shell are marked in yellow circles); e STEM image of Pd–Fe3O4–H at lower magnification; f–i corresponding EELS elemental mappings of the selected section in e; f Fe, g Pd, h O, and i overlapped figure.
