Fabrication and characterization of well-dispersed and highly stable PtRu nanoparticles on carbon mesoporous material for applications in direct methanol fuel cell

Shou Heng Liu, Wen Yueh Yu, Ching Hsiang Chen, An Ya Lo, Bing Joe Hwang, Shu Hua Chien, Shang Bin Liu

研究成果: Article同行評審

147 引文 斯高帕斯(Scopus)

摘要

Well-dispersed, highly stable PtRu nanoparticles of ca. 2-3 nm on carbon mesoporous materials (PtRu-CMMs) were synthesized directly using SBA-15 mesoporous silica as the template, furfuryl alcohol and trimethylbenzene as the primary carbon source, and platinum and ruthenium acetylacetonates as the cofeeding metal and carbon precursors. Results obtained from X-ray diffraction and X-ray photoelectron spectroscopy show that the Pt metal in the PtRu-CMMs was present in the form of a face-centered cubic (fee) crystalline structure and the alloyed PtRu nanoparticles were composed mainly of Ru oxides, Ru(O), and Pt(O) metals. Further studies by X-ray absorption spectroscopy confirmed that a highly alloyed state of the PtRu nanoparticles is responsible for the superior electrocatalytic performance observed for the PtRu-CMMs, as compared to typical commercial electrocatalysts. The Pt50Ru50-CMM sample was found to possess the best electrocatalytic performance and long-term durability and should appeal to direct methanol fuel cell applications as anodic electrodecatalyst.

原文English
頁(從 - 到)1622-1628
頁數7
期刊Chemistry of Materials
20
發行號4
DOIs
出版狀態Published - 2008 2月 26

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)
  • 材料化學

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