DMAc used as a reducer for preparation of spherical silver nanoparticles with high dispersion  

作　　者：贺国文 李芬芳 文杰斌 

机构地区：[1]School of Chemistry and Chemical Engineering, Central South University [2]College of Chemical and Environmental Engineering, Hunan City University [3]School of Materials Science and Engineering, Central South University

出　　处：《Journal of Central South University》2015年第2期445-449,共5页中南大学学报（英文版）

基　　金：Project(126223)supported by Postdoctoral Fund of Central South University,China;Project(13JJ4102)supported by the Natural Science Foundation of Hunan Province,China;Project(14A025)supported by the Research Foundation of Education Bureau of Hunan Province,China

摘　　要：A silver nanoparticle(Ag NP) with good monodispersity was produced by a convenient method for reducing of Ag NO3 with N, N-dimethylacetamide in the presence of polyvinyl pyrrolidone(PVP) as the surface modification agent. The shape and size of the Ag NP with reaction time were taken as variables. The surface plasmon band transition was monitored with reaction mixture time at different temperatures. The Ag NP crystallinity increases with the reaction time, and the reduction efficiency is very low when Ag NP solution is dealt at room temperature even after two days, while it is greatly improved at 160 °C only for 25 min. Ag NP modified by the as-synthesized PVP has a face-centered cubic crystalline structure, in which Ag NP could develop into a spherical morphology with a very narrow size distribution of 2-11 nm. The preparation provides a new reducing agent to form Ag NP with simpler operation and shorter time.A silver nanoparticle（Ag NP） with good monodispersity was produced by a convenient method for reducing of Ag NO3 with N, N-dimethylacetamide in the presence of polyvinyl pyrrolidone（PVP） as the surface modification agent. The shape and size of the Ag NP with reaction time were taken as variables. The surface plasmon band transition was monitored with reaction mixture time at different temperatures. The Ag NP crystallinity increases with the reaction time, and the reduction efficiency is very low when Ag NP solution is dealt at room temperature even after two days, while it is greatly improved at 160 °C only for 25 min. Ag NP modified by the as-synthesized PVP has a face-centered cubic crystalline structure, in which Ag NP could develop into a spherical morphology with a very narrow size distribution of 2-11 nm. The preparation provides a new reducing agent to form Ag NP with simpler operation and shorter time.

关 键 词：N N-dimethylacetamide（DMAc） sliver nanoparticles polyvinyl pyrrolidone（PVP） PREPARATION 

分 类 号：TB383.1[一般工业技术—材料科学与工程]