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Issue 24, 2011
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Ternary PtSnRh–SnO2 nanoclusters: synthesis and electroactivity for ethanol oxidation fuel cell reaction

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Abstract

Carbon supported ternary Pt52Sn(36−x)Rh12–SnxO2x electrocatalysts with the average diameter of 2.8 ± 0.5 nm were synthesized using a Polyol process followed by thermal treatment. Several techniques including high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) were used to identify the coexistence of homogeneously distributed Pt/Sn/Rh random alloy and non-alloyed SnO2 throughout the catalyst. The Pt52Sn(36−x)Rh12–SnxO2x catalyst showed a superior long-term activity and stability towards ethanol oxidation than the commercial Pt catalyst. Our data of ternary Pt/Sn/Rh catalysts with different chemical compositions and crystalline structures also indicated that the superior performance of Pt52Sn(36−x)Rh12–SnxO2x might result from the electronic effect of the Pt/Sn/Rh random alloy.

Graphical abstract: Ternary PtSnRh–SnO2 nanoclusters: synthesis and electroactivity for ethanol oxidation fuel cell reaction

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Publication details

The article was received on 13 Dec 2010, accepted on 11 Apr 2011 and first published on 16 May 2011


Article type: Paper
DOI: 10.1039/C0JM04358C
Citation: J. Mater. Chem., 2011,21, 8887-8892

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    Ternary PtSnRh–SnO2 nanoclusters: synthesis and electroactivity for ethanol oxidation fuel cell reaction

    W. Du, Q. Wang, C. A. LaScala, L. Zhang, D. Su, A. I. Frenkel, V. K. Mathur and X. Teng, J. Mater. Chem., 2011, 21, 8887
    DOI: 10.1039/C0JM04358C

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