Metallurgy in a beaker

Nanoparticle toolkit for the rapid low-temperature solution synthesis of functional multimetallic solid-state materials

Raymond Edward Schaak, Amandeep K. Sra, Brian M. Leonard, Robert E. Cable, John C. Bauer, Yi Fan Han, Joel Means, Winfried Teizer, Yolanda Vasquez, Edward S. Funck

Research output: Contribution to journalArticle

125 Citations (Scopus)

Abstract

Intermetallic compounds and alloys are traditionally synthesized by heating mixtures of metal powders to high temperatures for long periods of time. A low-temperature solution-based alternative has been developed, and this strategy exploits the enhanced reactivity of nanoparticles and the nanometer diffusion distances afforded by binary nanocomposite precursors. Prereduced metal nanoparticles are combined in known ratios, and they form nanomodulated composites that rapidly transform into intermetallics and alloys upon heating at low temperatures. The approach is general in terms of accessible compositions, structures, and morphologies. Multiple compounds in the same binary system can be readily accessed; e.g., AuCu, AuCu3, Au3Cu, and the AuCu-II superlattice are all accessible in the Au-Cu system. This concept can be extended to other binary systems, including the intermetallics FePt 3, CoPt, CuPt, and Cu3-Pt and the alloys Ag-Pt, Au-Pd, and Ni-Pt. The ternary intermetallic Ag2Pd3S can also be rapidly synthesized at low temperatures from a nanocomposite precursor comprised of Ag2S and Pd nanoparticles. Using this low-temperature solution-based approach, a variety of morphologically diverse nanomaterials are accessible: surface-confined thin films (planar and nonplanar supports), free-standing monoliths, nanomesh materials, inverse opals, and dense gram-scale nanocrystalline powders of intermetallic AuCu. Importantly, the multimetallic materials synthesized using this approach are functional, yielding a room-temperature Fe-Pt ferromagnet, a superconducting sample of Ag 2Pd3S (Tc = 1.10 K), and a AuPd4 alloy that selectively catalyzes the formation of H2O2 from H2 and O2. Such flexibility in the synthesis and processing of functional intermetallic and alloy materials is unprecedented.

Original languageEnglish (US)
Pages (from-to)3506-3515
Number of pages10
JournalJournal of the American Chemical Society
Volume127
Issue number10
DOIs
StatePublished - Mar 16 2005

Fingerprint

Metallurgy
Nanoparticles
Intermetallics
Temperature
Nanocomposites
Powders
Heating
Metal Nanoparticles
Nanocrystalline powders
Magnets
Nanostructures
Metal nanoparticles
Powder metals
Nanostructured materials
Metals
Thin films
Composite materials
Processing
Chemical analysis

All Science Journal Classification (ASJC) codes

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

Cite this

Schaak, Raymond Edward ; Sra, Amandeep K. ; Leonard, Brian M. ; Cable, Robert E. ; Bauer, John C. ; Han, Yi Fan ; Means, Joel ; Teizer, Winfried ; Vasquez, Yolanda ; Funck, Edward S. / Metallurgy in a beaker : Nanoparticle toolkit for the rapid low-temperature solution synthesis of functional multimetallic solid-state materials. In: Journal of the American Chemical Society. 2005 ; Vol. 127, No. 10. pp. 3506-3515.
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Metallurgy in a beaker : Nanoparticle toolkit for the rapid low-temperature solution synthesis of functional multimetallic solid-state materials. / Schaak, Raymond Edward; Sra, Amandeep K.; Leonard, Brian M.; Cable, Robert E.; Bauer, John C.; Han, Yi Fan; Means, Joel; Teizer, Winfried; Vasquez, Yolanda; Funck, Edward S.

In: Journal of the American Chemical Society, Vol. 127, No. 10, 16.03.2005, p. 3506-3515.

Research output: Contribution to journalArticle

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T2 - Nanoparticle toolkit for the rapid low-temperature solution synthesis of functional multimetallic solid-state materials

AU - Schaak, Raymond Edward

AU - Sra, Amandeep K.

AU - Leonard, Brian M.

AU - Cable, Robert E.

AU - Bauer, John C.

AU - Han, Yi Fan

AU - Means, Joel

AU - Teizer, Winfried

AU - Vasquez, Yolanda

AU - Funck, Edward S.

PY - 2005/3/16

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