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    CNx-modified Fe3O4 as Pt nanoparticle support for the oxygen reduction reaction

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    Wang_CNx-modified_2013.pdf (1.198Mb)
    Date
    2013
    Author
    Wang, Rongfang
    Jia, Jingchun
    Wang, Hui
    Wang, Qizhao
    Ji, Shan
    Tian, Zhongqun
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    Abstract
    A novel electrocatalyst support material, nitrogendoped carbon (CNx)-modified Fe3O4 (Fe3O4-CNx), was synthesized through carbonizing a polypyrrole-Fe3O4 hybridized precursor. Subsequently, Fe3O4-CNx-supported Pt (Pt/Fe3O4-CNx) nanocomposites were prepared by reducing Pt precursor in ethylene glycol solution and evaluated for the oxygen reduction reaction (ORR). The Pt/Fe3O4-CNx catalysts were characterized by X-ray diffraction, Raman spectra, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The electrocatalytic activity and stability of the as-prepared electrocatalysts toward ORR were studied by cyclic voltammetry and steady-state polarization measurements. The results showed that Pt/ Fe3O4-CNx catalysts exhibited superior catalytic performance for ORR to the conventional Pt/C and Pt/C-CNx catalysts.
    URI
    http://dx.doi.org/10.1007/s10008-012-1948-4
    http://hdl.handle.net/10566/3466
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    • Research Articles (SAIAMC)

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