Vapor-phase synthesis of metallic and intermetallic nanoparticles and nanowires: Magnetic and catalytic properties

Garry Glaspell, Victor Abdelsayed, Khaled Saoud, M. Samy El-Shall

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

In this paper, we present several examples of the vapor-phase synthesis of intermetallic and alloy nanoparticles and nanowires, and investigate their magnetic and catalytic properties. In the first example, we report the vapor-phase synthesis of intermetallic aluminide nanoparticles. Specifically, FeAl and NiAl nanoparticles were synthesized via laser vaporization controlled condensation (LVCC) from their bulk powders. The NiAl nanoparticles were found to be paramagnetic at room temperature, with a blocking temperature of approximately 15 K. The FeAl nanoparticles displayed room-temperature ferromagnetism. In the second example, we report the vapor-phase synthesis of cobalt oxide nanoparticle catalysts for low-temperature CO oxidation. The incorporation of Au and Pd nanoparticles into the cobalt oxide support leads to significantly improved catalytic activity and stability of the binary catalyst systems. Finally, we report the synthesis of nanowires of Ge, Mg, Pd, and Pt using the vapor-liquid-solid (VLS) method where the vapor-phase growth of the wire is catalyzed using a proper metal catalyst present in the liquid phase.

Original languageEnglish
Pages (from-to)1667-1689
Number of pages23
JournalPure and Applied Chemistry
Volume78
Issue number9
DOIs
Publication statusPublished - Sep 2006
Externally publishedYes

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Keywords

  • Alloys
  • Catalysis
  • CO oxidation
  • Intermetallic
  • LVCC
  • Magnetism
  • Nanoparticles
  • Nanowires
  • Vapor-liquid-solid growth

ASJC Scopus subject areas

  • Chemistry(all)

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