Influence of CeO₂ Nanoparticle Morphology on the Electrocatalytic Activity of Palladium toward the Formate Electrooxidation Reaction.

ABSTRACT: This study investigates the electrocatalytic activity of palladium (Pd) nanocatalysts combined with nanoparticles (NPs) of cerium oxide (CeO₂) polyhedra (Pd/CeO₂/C poly) and with morphologies of cube (Pd/CeO₂/C NC), hexagonal sheet (Pd/CeO₂/C NS), and nanorod (Pd/CeO₂/C NR) for the formate electrooxidation reaction (FER) in an alkaline medium, a key process in direct formate fuel cells (DFFCs). X-ray diffraction (XRD) patterns indicate that the CeO₂ NP dislocation density follows the decreasing order of Pd/CeO₂/C NR > Pd/CeO₂/C NS > Pd/CeO₂/C NC > Pd/CeO₂/C poly. This order corresponds to the Pd⁰ concentration observed in X-ray photoelectron spectroscopy (XPS) data. Pd/C

SUBMITTER: Santos AO 

PROVIDER: S-EPMC12392020 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature