Synergistic enhancement of the hydrogen evolution reaction by bimetallic Pt-Ru nanoparticles supported on a carbon xerogel.

ABSTRACT: Pt-Ru alloys have shown promising catalytic activity toward the hydrogen evolution reaction (HER) in acidic media; however, their stability remains a critical challenge due to the oxidation and dissolution of Ru species in 0.5 M H₂SO₄. Herein, the synthesis and comparative assessment of a series of electrocatalysts based on a carbon xerogel loaded with platinum and ruthenium, Pt-Ru, specifically a pure carbon xerogel (CX), 5 wt% platinum-loaded CX (Pt5/CX), 5 wt% platinum and 2.5 wt% ruthenium co-loaded CX (Pt5:Ru2.5/CX), and 5 wt% platinum and 5 wt% ruthenium co-loaded CX (Pt5:Ru5/CX) were evaluated for the HER. The carbon xerogel served as a high-surface-area, porous, and conductive substrate, promoting uniform distribution of the metallic nanoparticles, mitigating

SUBMITTER: Abdelwahab A 

PROVIDER: S-EPMC12834218 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature