Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials and Department of Chemistry, Fudan University, Shanghai, 200433, China.
Nanoscale Res Lett. 2009 Apr 10;4(7):705-8. doi: 10.1007/s11671-009-9301-2.
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.
已开发出一种简便的化学还原方法,通过使用聚(N-乙烯基吡咯烷酮)(PVP)作为稳定剂和硼氢化钠作为还原剂,在碱性乙二醇(EG)溶剂中制备出尺寸可控制在约 1nm 的超细铜纳米粒子。透射电子显微镜(TEM)结果和紫外-可见吸收光谱表明,所制备的粒子具有良好的单分散性,主要由纯金属 Cu 纳米晶组成,在简单密封储存的较长时间内非常稳定。