Size-Controllable PtPdRuRhCuMo High-Entropy Alloy Nanoparticles for Electrocatalytic Ethylene Glycol Oxidation

In this study, well-dispersed and uniform PtPdRuRhCuMo HEA NPs were successfully synthesized via a facile solvothermal method, leveraging the distinct morphology-directing effects of CTAB and CTAC.

The resulting catalysts, particularly the HEA-1 sample (using CTAB as the surfactant), exhibited exceptional electrocatalytic performance toward the alkaline ethylene glycol oxidation reaction (EGOR), achieving a mass activity of 2.4 A mg-1, which significantly surpasses that of commercial Pt/C (1.25 A mg-1). More importantly, the HEA-1 catalyst possesses excellent long-term cyclic stability, retaining 50% of its activity after 10 hours of continuous testing, attributed to the strong electronic interactions between the multi-metal components and the structural integrity of the nanoparticles.