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*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

25 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
頁(從 - 到)159-166
頁數8
期刊ChemCatChem
2
發行號2
DOIs
出版狀態已發佈 - 2010 二月 8

ASJC Scopus subject areas

  • 催化
  • 物理與理論化學
  • 有機化學
  • 無機化學

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