Synthesis and Characterization of a Series of PtRu/C Catalysts for the Electrooxidation of CO 


Vol. 18,  No. 4, pp. 432-439, Dec.  2012


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  Abstract

The electrocatalytic oxidation of CO was studied using carbon-supported 20 wt% PtRu (PtRu/C) catalysts, which were prepared with different Pt : Ru atomic ratios from 7 : 3 to 3 : 7 using a colloidal method combined with a freeze-drying procedure. The bimetallic PtRu/C catalysts were characterized by various physicochemical analyses, including X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). CO stripping voltammetry measurements indicated that the addition of Ru with a Pt catalyst significantly improved the electrocatalytic activity for CO electrooxidation. Among the tested catalysts, the Pt5Ru5/C catalyst had the lowest onset potential (vs.Ag/AgCl) and the largest CO EAS. Structural modification via lattice parameter change and electronic modification in the unfilled d band states for Pt atoms may facilitate the electrooxidation of CO.

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  Cite this article

[IEEE Style]

L. S, C. SM, K. WB, "Synthesis and Characterization of a Series of PtRu/C Catalysts for the Electrooxidation of CO," Clean Technology, vol. 18, no. 4, pp. 432-439, 2012. DOI: .

[ACM Style]

Lee S, Choi SM, and Kim WB. 2012. Synthesis and Characterization of a Series of PtRu/C Catalysts for the Electrooxidation of CO. Clean Technology, 18, 4, (2012), 432-439. DOI: .

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

한국연구재단 등재학술지