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Open Access Nano Express

Facile Fabrication of Ultrafine Copper Nanoparticles in Organic Solvent

Han-Xuan Zhang1, Uwe Siegert2, Ran Liu3 and Wen-Bin Cai1*

Author affiliations

1 Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials and Department of Chemistry, Fudan University, Shanghai, 200433, China

2 Tech Univ Chemnitz, Fak Nat Wissensch, Inst Chem, Lehrstuhl Anorgan Chem, 09111, Chemnitz, Germany

3 The State Key Lab of ASIC & System and Department of Microelectronic, Fudan University, Shanghai, 200433, China

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Citation and License

Nanoscale Research Letters 2009, 4:705-708  doi:10.1007/s11671-009-9301-2

Published: 10 April 2009

Abstract

A facile chemical reduction method has been developed to fabricate ultrafine copper nanoparticles whose sizes can be controlled down to ca. 1 nm by using poly(N-vinylpyrrolidone) (PVP) as the stabilizer and sodium borohyrdride as the reducing agent in an alkaline ethylene glycol (EG) solvent. Transmission electron microscopy (TEM) results and UV–vis absorption spectra demonstrated that the as-prepared particles were well monodispersed, mostly composed of pure metallic Cu nanocrystals and extremely stable over extended period of simply sealed storage.

Keywords:
Copper nanoparticles; Ultrafine nanoparticles; Chemical reduction; Polyol method