fig8
Figure 8. (A) The reaction scheme to prepare PBN; (B) ACHAADF-STEM imaging of PBN-300-M (M = Fe, Co, Ni, Mn, Pd, Mo, W, Re, Ir) samples. The atomic distribution of various metal elements was evident. Adapted with permission[45]. Copyright 2022, Wiley-VCH GmbH; (C) Schematic illustration of the preparation for the Pt-Ni(OH)2-E; (D) Ni 2p XPS spectra; (E) XANES spectra of Ni foil, Ni(OH)2, Pt-Ni(OH)2-BP, and Pt-Ni(OH)2-E at the Ni K-edge; (F) Pt 4f XPS spectra; (G) XANES spectra of Pt foil, PtO2, Pt-Ni(OH)2-E. Adapted with permission[49]. Copyright 2023, Wiley-VCH GmbH. ACHAADF-STEM: Aberration-corrected high-angle annular dark-field scanning transmission electron microscopy; PBM: pyrolytic boron nitride; XPS: X-ray photoelectron spectroscopy; XANES: X-ray absorption near-edge structure.
