Platinum-Decorated Ruthenium Nanoparticles for Enhanced Methanol Electrooxidation

Ching Hsiang Chen, Loka Subramanyam Sarma, Di Yan Wang, Feng Ju Lai, Cun Cun Al Andra, Shi Hong Chang, Din Goa Liu, Chia Chun Chen, Jyh Fu Lee, Bing Joe Hwang

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A promising electrocatalyst based on the reduction of Pt2+ 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 Pt-Ru 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 Pt-Ru black catalyst. The Pt-on-Ru catalyst exhibits a higher mass-specific current than the Pt-Ru black catalyst in solution in 0.5M H2SO4 with 10 vol.% CH3OH 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.

Original languageEnglish
Pages (from-to)159-166
Number of pages8
JournalChemCatChem
Volume2
Issue number2
DOIs
Publication statusPublished - 2010 Feb 8

    Fingerprint

Keywords

  • Electrocatalysis
  • Electrochemistry
  • Fuel cells
  • Nanoparticles
  • X-ray absorption spectroscopy

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

Chen, C. H., Sarma, L. S., Wang, D. Y., Lai, F. J., Al Andra, C. C., Chang, S. H., Liu, D. G., Chen, C. C., Lee, J. F., & Hwang, B. J. (2010). Platinum-Decorated Ruthenium Nanoparticles for Enhanced Methanol Electrooxidation. ChemCatChem, 2(2), 159-166. https://doi.org/10.1002/cctc.200900051