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Correlation between composition and structure of PtxNiy alloy nanodendrites

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주제분류재료공학

초록

We have synthesized PtxNiy alloy nanodendrites by a thermal decomposition method. The structure and composition of the as-prepared samples were characterized by field-emission transmission electron microscopy (FE-TEM), energy dispersive X-ray (EDX) spectroscopy, and X-ray diffraction (XRD). The growth mode of the PtxNiy alloy samples synthesized as a function of an intended atomic fraction of Ni was likely to be strongly affected by and reduction (or oxidation) potentials and surface energy.

Abstract

We have synthesized PtxNiy alloy nanodendrites by a thermal decomposition method. The structure and composition of the as-prepared samples were characterized by field-emission transmission electron microscopy (FE-TEM), energy dispersive X-ray (EDX) spectroscopy, and X-ray diffraction (XRD). The growth mode of the PtxNiy alloy samples synthesized as a function of an intended atomic fraction of Ni was likely to be strongly affected by and reduction (or oxidation) potentials and surface energy.

참고문헌 (27)

  1. I. -T. Kim, "Synthesis and characterization of Pt-Pd catalysts for methanol oxidation and oxygen reduction", J. Nanosci. Nanotech, 8, pp.5302~ (2008)
  2. S. -W. Xie, "Comparison of alcohol electrooxidation on Pt and Pd electrodes in alkaline medium", Int. J. Electrochem. Sci, 6, pp.882~ (2011)
  3. S. Lj. Gojković, "Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalysts", Electrochim. Acta, 48, pp.3607~ (2003)
  4. J. M. S. Ayub, "Ethanol electro-oxidation on PtSn", C-ATO electrocatalysts, 2012, pp.7, 11351~
  5. M. D. Obradović, "Electrochemical instability of Pt nanoparticles probed by formic acid oxidation", J. Electroanal. Chem, 664, pp.152~ (2012)
  6. Y. W. Lee, "Shaping Pd nanocatalysts through the control of reaction sequence", Chem. Commun, 46, pp.1535~ (2010)
  7. Y. Kang, "Size- and shapeselective synthesis of metal nanocrystals and nanowires using CO as a reducing agent", Angew. Chem. Int. Ed, 49, pp.6156~ (2010)
  8. Y. -W. Lee, "Cuboctahedral Pd nanoparticles on WC for enhanced methanol electrooxidation in alkaline solution", Chem. Commun, 46, pp.9241~ (2010)
  9. Y. -W. Lee, "Synthesis of octahedral Pt-Pd alloy nanoparticles for improved catalytic activity and stability in methanol electrooxidation", Phys. Chem. Chem. Phys, 13, pp.5569~ (2011)
  10. Y. -W. Lee, "Glycerol-mediated synthesis of Pd nanostructures with dominant {111} facets for enhanced electrocatalytic activity", Catal. Commun, 15, pp.137~ (2011)
  11. D. Seo, "Asymmetric hollow nanorod formation through a partial galvanic replacement reaction", J. Am. Chem. Soc, 131, pp.18210~ (2009)
  12. L. Wang, "Autoprogrammed synthesis of triple-layered Au@Pd@Pt core-shell nanoparticles consisting of a Au@Pd bimetallic core and nanoporous Pt shell", J. Am. Chem. Soc, 132, pp.13636~ (2010)
  13. Z. Chen, "Supportless Pt and PtPd nanotubes as electrocatalysts for oxygenreduction reactions", Angew. Chem. Int. Ed, 46, pp.4060~ (2007)
  14. A. Mohanty, "A universal approach to the synthesis of noble metal nanodendrites and their catalytic properties", Angew. Chem. Int. Ed, 49, pp.4962~ (2010)
  15. B. Lim, "Nucleation and growth mechanisms for Pd-Pt bimetallic nanodendrites and their electrocatalytic properties", Nano Res, 3, pp.69~ (2010)
  16. L. Wang, "Direct synthesis of spatially-controlled Pt-on-Pd bimetallic nanodendrites with superior electrocatalytic activity", J. Am. Chem. Soc, 131, pp.9674~ (2011)
  17. L. Wang, "Block copolymer mediated synthesis of dendritic platinum nanoparticles", J. Am. Chem. Soc, 131, pp.9152~ (2009)
  18. Z. Peng, "Synthesis and oxygen reduction electrocatalytic property of Pt-on-Pd baimetallic heteronanostructures", J. Am. Chem. Soc, 131, pp.7542~ (2009)
  19. B. Lim, "Pd-Pt bimetallic nanodendrites with high activity for oxygen reduction", Science, 324, pp.1302~ (2009)
  20. N. Tian, "Synthesis of tetrahexahedral platinum nanocrystals with high-index facets and high electro-oxidation activity", Science, 316, pp.732~ (2007)
  21. S. -I. Choi, "Synthesis and characterization of Pt9Co nanocubes with high activity for oxygen reduction", Chem. Commun, 46, pp.4950~ (2010)
  22. Q. Zhang, "Synthesis of monodisperse Ag-Au alloy nanoparticles with independently tunable morphology, composition, size, and surface chemistry and their 3-D superlattices", Adv. Funct. Mater, 19, pp.1387~ (2009)
  23. H. Lee, "Morphological control of catalytically active platinum nanocrystals", Angew. Chem. Int. Ed, 45, pp.7824~ (2006)
  24. Y. -W. Lee, "Shape-controlled Pd nanostructure catalysts for highly efficient electrochemical power sources", J. Power Sources, 195, pp.5896~ (2010)
  25. M. Subhramannia, "Shape-dependent electrocatalytic activity of platinum nanostructures", J. Mater. Chem, 18, pp.5858~ (2008)
  26. Y. Bing, "Nanostructured Pt-alloy electrocatalysts for PEM fuel cell oxygen reduction reaction", Chem. Soc. Rev, 39, pp.2184~ (2010)
  27. Y. -W. Lee, "Monodispersed platinum nanocubes for enhanced electrocatalytic properties in alcohol electrooxidation", Chem. Commun, 47, pp.6296~ (2011)

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