Ultralow-Concentration Pt-Decorated Carbon Sphere Catalyst for Enhanced Hydrogen Evolution Reaction.

ABSTRACT: Ultralow decoration of platinum nanoparticles (Pt NPs) (0.32 wt %) onto carbon spheres (CS) has been developed for hybrid formation, using hydrothermal heat treatment, followed by chemical reduction of nanoparticles. The successful decoration of CSs bearing amine groups with platinum nanoparticles was confirmed directly by X-ray photoelectron spectroscopy. The uniform distribution and crystallinity of the Pt NPs in the hybrid structures were confirmed from X-ray diffraction spectroscopy and transmission electron microscopy. The hydrogen evolution reaction studied on the proposed Pt-CS hybrids reveals an onset potential of only -144 mV (vs RHE, reversible hydrogen electrode) with a current density of 10 mA/cm2 under an acidic 0.5 M H2SO4 medium, which exhibits a better performance as compar

SUBMITTER: Bogireddy NKR 

PROVIDER: S-EPMC11603201 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature