Monodisperse MPt (M = Fe, Co, Ni, Cu, Zn) nanoparticles prepared from a facile oleylamine reduction of metal salts

Yongsheng Yu, Weiwei Yang, Xiaolian Sun, Wenlei Zhu, X. Z. Li, D. J. Sellmyer, Shouheng Sun

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

We report a simple, yet general, approach to monodisperse MPt (M = Fe, Co, Ni, Cu, Zn) nanoparticles (NPs) by coreduction of M(acac)2 and Pt(acac)2 (acac = acetylacetonate) with oleylamine at 300 °C. In the current reaction condition, oleylamine serves as the reducing agent, surfactant, and solvent. As an example, we describe in details the synthesis of 9.5 nm CoPt NPs with their compositions controlled from Co37Pt 63 to Co69Pt31. These NPs show composition-dependent structural and magnetic properties. The unique oleylamine reduction process makes it possible to prepare MPt NPs with their physical properties and surface chemistry better rationalized for magnetic or catalytic applications.

Original languageEnglish (US)
Pages (from-to)2778-2782
Number of pages5
JournalNano Letters
Volume14
Issue number5
DOIs
StatePublished - May 14 2014

Keywords

  • MPt alloy
  • Nanoparticles
  • alloy structure
  • catalysis
  • nanomagnetism
  • oleylamine reduction

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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