Nano Express

Nanoscale Research Letters

, Volume 4, Issue 7, pp 705-708

Open Access This content is freely available online to anyone, anywhere at any time.

Facile Fabrication of Ultrafine Copper Nanoparticles in Organic Solvent

  • Han-Xuan ZhangAffiliated withShanghai Key Laboratory of Molecular Catalysis and Innovative Materials and Department of Chemistry, Fudan University
  • , Uwe SiegertAffiliated withTech Univ Chemnitz, Fak Nat Wissensch, Inst Chem, Lehrstuhl Anorgan Chem
  • , Ran LiuAffiliated withThe State Key Lab of ASIC & System and Department of Microelectronic, Fudan University
  • , Wen-Bin CaiAffiliated withShanghai Key Laboratory of Molecular Catalysis and Innovative Materials and Department of Chemistry, Fudan University Email author 

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