一种氢还原氨基甲酸银配合物制备纳米银胶粒的简易方法  

A Facile Preparation of Silver Nanocolloids by Hydrogen Reduction of a Silver Alkylcarbamate Complex

作　　者：张贵恩(译)[1] 郑凯(校)[1] 

机构地区：[1]中国电子科技集团公司第33研究所电磁防护材料与器件事业部,山西·太原030006

出　　处：《电子材料与电子技术》2012年第4期13-22,共10页Electronic Material & Electronic Technology

摘　　要：本文研究了在有机溶剂中以氢气还原氨基甲酸银配合物合成高浓度银胶粒的简易制备方法。聚乙烯吡咯烷酮（PVP）是从化学还原反应中获得银胶粒的稳定剂。为了确定稳定可控的最小尺寸和最窄分布的银胶粒最佳制备条件，讨论了变化2-乙基己基甲酸银配合物（Ag—EHCB）、PVP和2-丙醇的浓度对结果的影响。通过透射电镜观察，起初的胶体颗粒直径主要在5～50nm之间，在最大尺寸420nm的附近显示出在紫外区域一个明显的吸收带。在还原剂处理之后，通过紫外可见光谱仪、X射线衍射仪和高分辨率透射电镜对胶质物进行了表征。Controlled reduction of silver alkylcarbamate complexes with hydrogen gas was investigated as a facile synthetic method for high concentrations of silver nanocolloids in organic solvent. Polyvinylpyrrolidone （PVP） was used to stabilize the silver colloids obtained from the chemical reduction. To determine optimum conditions for preparation of the stable and controlled silver colloids with the narrowest particle size and distribution, a large num- ber of experiments were carried out involving variations in the concentrations of the silver 2 - ethylhexylcarbamate （Ag- EHCB） complex, PVP, and 2 - propanol. The initial colloid had a mean particle diameter between 5 - 50 nm, as measured by transmission electron microscopy, and exhibited a sharp absorption band in the UV region with a maximum size near 420 nm. After treatment with a reducing agent, the colloids were characterized by ultraviolet - visible spectroscopy, X - ray diffraction, and high - resolution transmission electron microscopy.

关 键 词：银胶粒 氨基甲酸银 还原反应 氢 有机溶剂 

分 类 号：TQ465.7[化学工程—制药化工]