A promising electrocatalyst based on the reduction of Pt 2+ ions on the surface of hexagonally close‐packed (hcp) Ru core nanoparticles has been prepared by a redox–transmetalation process. This simple synthetic process generates a Pt‐on‐Ru catalyst with a lower Pt content than commercially available PtRu electrocatalysts and with a long‐range ordered hcp structure, which can significantly reduce the Pt loading. X‐Ray absorption spectroscopy of the Pt‐on‐Ru catalyst reveals pronounced electronic modifications when compared to the commercial PtRu black catalyst. The Pt‐on‐Ru catalyst exhibits a higher mass‐specific current than the PtRu black catalyst in solution in 0.5 M H 2 SO 4 with 10 vol. % CH 3 OH under the conditions of rotating disk experiments. Further optimization of this synthetic procedure may yield even more active electrocatalysts with a significant reduction in noble metal loadings.
No takes yet. Share an insight, caveat, or question.
Chen et al. (2009) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: