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

doi:10.1021/nl500776e

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

Nano Lett. 2014 May 14;14(5):2778-82. doi: 10.1021/nl500776e. Epub 2014 Apr 3.

Authors

Yongsheng Yu¹, Weiwei Yang, Xiaolian Sun, Wenlei Zhu, X-Z Li, D J Sellmyer, Shouheng Sun

Affiliation

¹ Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States.

PMID: 24690033
DOI: 10.1021/nl500776e

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 Co37Pt63 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.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.