rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Synthesis and characterization of patterned surfaces and catalytically relevant binary nanocrystalline intermetallic compounds
  name:
    name part: Cable, Robert E.
    role:
      role term: creator
  name:
    name part: Schaak, Raymond E.
    role:
      role term: thesis advisor.
  name:
    name part: Batteas, James D.
    role:
      role term: thesis advisor.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2010
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: electronic
    form: remote
    extent: 1 online resource.
  abstract: As devices and new technologies continue to shrink, nanocrystalline multi-metal compounds are becoming increasingly important for high efficiency and multifunctionality. However, synthetic methods to make desirable nanocrystalline multi-metallics are not yet matured. In response to this deficiency, we have developed several solution-based methods to synthesize nanocrystalline binary alloy and intermetallic compounds. This dissertation describes the processes we have developed, as well as our investigations into the use of lithographically patterned surfaces for template-directed self-assembly of solution dispersible colloids. We used a modified polyol process to synthesize nanocrystalline intermetallics of late transition and main-group metals in the M-Sn, Pt-M', and Co-Sb systems. These compounds are known to have interesting physical properties and as nanocrystalline materials they may be useful for magnetic, thermoelectric, and catalytic applications. While the polyol method is quite general, it is limited to metals that are somewhat easy to reduce. Accordingly, we focused our synthetic efforts on intermetallics comprised of highly electropositive metals. We find that we can react single-metal nanoparticles with zero-valent organometallic Zinc reagents in hot, coordinating amine solvents via a thermal decomposition process to form several intermetallics in the M''-Zn system. Characterization of the single-metal intermediates and final intermetallic products shows a general retention of morphology throughout the reaction, and changes in optical properties are also observed. Following this principle of conversion chemistry, we can employ the high reactivity of nanocrystals to reversibly convert between intermetallic phases within the Pt-Sn system, where PtSn2 -- PtSn -- Pt3Sn. Our conversion chemistry occurs in solution at temperatures below 300 °C and within 1 hour, highlighting the high reactivity of our nanocrystalline materials compared to the bulk. Some eviden…
  note: by Robert E. Cable.
  note: "Major Subject: Chemistry"
  note: Title from author supplied metadata (automated record created 2010-03-12 12:08:51).
  note: Electronic resource.
  note: Doctor of Philosophy Texas A&M University 2007 http://hdl.handle.net/1969.1/ETD-TAMU-2026
  note: Includes bibliographical references.
  note: Text (Dissertation)
  subject:
    topic: Major chemistry
  subject:
    topic: Nanocrystal
  subject:
    topic: Chemistry
  subject:
    topic: Polyol
  subject:
    topic: Metallurgy
  subject:
    topic: Lithography
  subject:
    topic: Inorganic
  subject:
    topic: Intermetallic
  subject:
    topic: Alloy
  subject:
    topic: Colloidal Crystal
  subject:
    topic: Synthesis
  subject:
    topic: Surface Patterning
  subject:
    topic: Catalysis
  subject:
    topic: Template
  subject:
    topic: Nanoparticle
  identifier: http://hdl.handle.net/1969.1/ETD-TAMU-2026
  record info:
    record content source: TXA
    record creation date: 100423
    record change date: 20151201120051.0
    record identifier: in00002579924