fig11

Figure 11. (A) High-resolution Bi 4f and (B) V 2p spectra for BiVO₄ and Bi-BiVO₄; (C) Mott-Schottky diagram for BiVO₄; (D) Diagram of charge transfer process at Bi-BiVO₄; (E) Specific surface area and (F) XPS for BiVO₄ and Bi-BiVO₄. Reprinted with permission from ref^[39]. Copyright 2021 Wiley-VCH GmbH; (G) SEM and (H and I) HRTEM images for Ni₃(BO₃)₂-150 catalysts; (J) XPS survey spectra, (K) high-resolution O 1s and (L) Ni 2p spectra for the original Ni₃(BO₃)₂, Ni₃(BO₃)₂-150, and Ni₃(BO₃)₂-250. Reprinted with permission from ref^[36]. Copyright 2021 The Royal Society of Chemistry. XPS: X-ray photoelectron spectroscopy spectra; SEM: scanning electron microscopy; HRTEM: high-resolution transmission electron microscope.