Facile fabrication of ultrafine copper nanoparticles in organic solvent.
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.
Zhang
Han-Xuan
HX
Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials and Department of Chemistry, Fudan University, Shanghai, 200433, China. wbcai@fudan.edu.cn.
Siegert
Uwe
U
Liu
Ran
R
Cai
Wen-Bin
WB