4.8 Article

FeCo nanocrystals encapsulated in N-doped carbon nanospheres/thermal reduced graphene oxide hybrids: Facile synthesis, magnetic and catalytic properties

Journal

CARBON
Volume 77, Issue -, Pages 255-265

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.05.028

Keywords

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Funding

  1. Specialized Research Fund for the Doctoral Program of Higher Education of China [20123227110018]
  2. National Nature Science Foundation of China [51272094, 51072071, 51102117]
  3. Foundation of State Key Laboratory of Coordination Chemistry

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The hybrids of FeCo nanocrystals encapsulated in N-doped carbon nanospheres (FeCo-NCNS) supported on thermal reduced graphene oxide (FeCo-NCNS/TRGO) are synthesized by in situ growth of Co2Fe(CN)(6) onto graphene oxide (GO), followed with a subsequent pyrolysis process. The as-synthesized products are characterized by transmission electron microscopy, powder X-ray diffraction, Raman spectroscopy, elements analysis and inductively coupled plasma optical emission spectrometer. The hybrids exhibit excellent ferromagnetic behavior, superior electrocatalytic activity toward oxygen reduction reaction (ORR), and markedly enhanced catalytic activity toward the reduction of 4-nitrophenol (4-NP) by NaBH4, which make the hybrids be attractive materials for various potential applications. Moreover, the performance of the hybrids can be optimized through adjusting the content of FeCo-NCNS on thermal reduced graphene oxide. This novel and elegant method presented here could be extended to synthesize other meta/alloy-NCNS/TRGO hybrids with various functions. (C) 2014 Elsevier Ltd. All rights reserved.

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