fig2

Figure 2. (A) Proposed catalytic process of the Pt/PN-CeO₂ for the AWS reaction of benzaldehyde into benzoic acid and H₂ at the interface between Pt and PN-CeO₂; (B) Dark-field TEM of Pt/PN-CeO₂ (the insert was the high-resolution dark-field TEM images); XPS analysis of (C) Ce 3d and (D) Pt 4f peaks of Pt/PN-CeO₂ and Pt/NR-CeO₂; (E) Raman spectra of the Pt/PN-CeO₂ and Pt/NR-CeO₂ catalysts. AWS: Aldehyde-water shift; TEM: transmission electron microscope; XPS: X-ray photoelectron spectroscopy.