Chemical transformation from FePt to Fe1-xPtMx (M = Ru, Ni, Sn) nanocrystals by a cation redox reaction: X-ray absorption spectroscopic studies

Di Yan Wang, Ching Hsiang Chen, Hung Chi Yen, You Liang Lin, Pei Yu Huang, Bing Joe Hwang, Chia Chun Chen

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

New ternary metal nanocrystals of Fe1-xPtMx (M = Ru3+, Sn2+, or Ni2+) were synthesized by chemical transformation from FePt nanocrystals using a cation redox reaction in a solution. The structure and composition of resulting nanocrystals were characterized by high-resolution transmission electron microscopy (TEM), X-ray powder diffraction (XRD) and X-ray photoemission spectroscopy (XPS). Moreover, X-ray absorption near-edge spectroscopy (XANES) was employed to confirm the chemical transformation from FePt to Fe1-xPtRux nanocrystals. The analyses of extended X-ray absorption find structure (EXAFS) revealed the detailed binding structures and coordination numbers of both FePt and Fe1-xPtRux nanocrystals. The results suggested that iron atoms of FePt lattices were oxidized to be Fe2+ and Fe3+ ions and were replaced by ruthenium atoms from the reduction of Ru3+ ions in solution to form Fe1-xPtRux lattices. Our method has opened a new route to easily and rapidly prepare a solid-solution type of ternary metal nanocrystals for catalytic applications.

Original languageEnglish
Pages (from-to)1538-1540
Number of pages3
JournalJournal of the American Chemical Society
Volume129
Issue number6
DOIs
Publication statusPublished - 2007 Feb 14

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Redox reactions
X ray absorption
Nanoparticles
Nanocrystals
Oxidation-Reduction
Cations
Positive ions
X-Rays
Metal Nanoparticles
Ions
Powder Diffraction
Photoelectron Spectroscopy
Ruthenium
Metals
Transmission Electron Microscopy
X-Ray Diffraction
Spectrum Analysis
Atoms
Iron
Photoelectron spectroscopy

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Chemical transformation from FePt to Fe1-xPtMx (M = Ru, Ni, Sn) nanocrystals by a cation redox reaction : X-ray absorption spectroscopic studies. / Wang, Di Yan; Chen, Ching Hsiang; Yen, Hung Chi; Lin, You Liang; Huang, Pei Yu; Hwang, Bing Joe; Chen, Chia Chun.

In: Journal of the American Chemical Society, Vol. 129, No. 6, 14.02.2007, p. 1538-1540.

Research output: Contribution to journalArticle

Wang, Di Yan ; Chen, Ching Hsiang ; Yen, Hung Chi ; Lin, You Liang ; Huang, Pei Yu ; Hwang, Bing Joe ; Chen, Chia Chun. / Chemical transformation from FePt to Fe1-xPtMx (M = Ru, Ni, Sn) nanocrystals by a cation redox reaction : X-ray absorption spectroscopic studies. In: Journal of the American Chemical Society. 2007 ; Vol. 129, No. 6. pp. 1538-1540.
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abstract = "New ternary metal nanocrystals of Fe1-xPtMx (M = Ru3+, Sn2+, or Ni2+) were synthesized by chemical transformation from FePt nanocrystals using a cation redox reaction in a solution. The structure and composition of resulting nanocrystals were characterized by high-resolution transmission electron microscopy (TEM), X-ray powder diffraction (XRD) and X-ray photoemission spectroscopy (XPS). Moreover, X-ray absorption near-edge spectroscopy (XANES) was employed to confirm the chemical transformation from FePt to Fe1-xPtRux nanocrystals. The analyses of extended X-ray absorption find structure (EXAFS) revealed the detailed binding structures and coordination numbers of both FePt and Fe1-xPtRux nanocrystals. The results suggested that iron atoms of FePt lattices were oxidized to be Fe2+ and Fe3+ ions and were replaced by ruthenium atoms from the reduction of Ru3+ ions in solution to form Fe1-xPtRux lattices. Our method has opened a new route to easily and rapidly prepare a solid-solution type of ternary metal nanocrystals for catalytic applications.",
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AU - Yen, Hung Chi

AU - Lin, You Liang

AU - Huang, Pei Yu

AU - Hwang, Bing Joe

AU - Chen, Chia Chun

PY - 2007/2/14

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N2 - New ternary metal nanocrystals of Fe1-xPtMx (M = Ru3+, Sn2+, or Ni2+) were synthesized by chemical transformation from FePt nanocrystals using a cation redox reaction in a solution. The structure and composition of resulting nanocrystals were characterized by high-resolution transmission electron microscopy (TEM), X-ray powder diffraction (XRD) and X-ray photoemission spectroscopy (XPS). Moreover, X-ray absorption near-edge spectroscopy (XANES) was employed to confirm the chemical transformation from FePt to Fe1-xPtRux nanocrystals. The analyses of extended X-ray absorption find structure (EXAFS) revealed the detailed binding structures and coordination numbers of both FePt and Fe1-xPtRux nanocrystals. The results suggested that iron atoms of FePt lattices were oxidized to be Fe2+ and Fe3+ ions and were replaced by ruthenium atoms from the reduction of Ru3+ ions in solution to form Fe1-xPtRux lattices. Our method has opened a new route to easily and rapidly prepare a solid-solution type of ternary metal nanocrystals for catalytic applications.

AB - New ternary metal nanocrystals of Fe1-xPtMx (M = Ru3+, Sn2+, or Ni2+) were synthesized by chemical transformation from FePt nanocrystals using a cation redox reaction in a solution. The structure and composition of resulting nanocrystals were characterized by high-resolution transmission electron microscopy (TEM), X-ray powder diffraction (XRD) and X-ray photoemission spectroscopy (XPS). Moreover, X-ray absorption near-edge spectroscopy (XANES) was employed to confirm the chemical transformation from FePt to Fe1-xPtRux nanocrystals. The analyses of extended X-ray absorption find structure (EXAFS) revealed the detailed binding structures and coordination numbers of both FePt and Fe1-xPtRux nanocrystals. The results suggested that iron atoms of FePt lattices were oxidized to be Fe2+ and Fe3+ ions and were replaced by ruthenium atoms from the reduction of Ru3+ ions in solution to form Fe1-xPtRux lattices. Our method has opened a new route to easily and rapidly prepare a solid-solution type of ternary metal nanocrystals for catalytic applications.

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