PVP为稳定剂不同溶剂体系银纳米粒子的制备及表征  

Preparation and Characterization of Silver Nanoparticles Using Polyvinylpyrrolidone as Stabilizer in Different Solvent Systems

作　　者：陈延明[1] 王晶[1] 李凤红[1] 

机构地区：[1]沈阳工业大学石油化工学院,辽宁辽阳111003

出　　处：《高分子材料科学与工程》2013年第2期152-154,共3页Polymer Materials Science & Engineering

基　　金：辽宁省科技厅博士基金项目资助(200644)

摘　　要：以聚乙烯吡咯烷酮(PVP)为稳定剂,AgNO3为前驱物,水、乙醇及N,N-二甲基甲酰胺为溶剂,制备银纳米粒子。采用紫外-可见吸收光谱对银纳米粒子形成的动力学过程进行了测定。结果表明,在特定PVP浓度、AgNO3浓度、反应温度和反应时间条件下,以水为溶剂,不能生成银纳米粒子,以乙醇及N,N-二甲基甲酰胺为溶剂,紫外-可见吸收光谱在410nm左右可观察到银纳米粒子所具有的表面等离子态特征吸收峰,动力学曲线表明,乙醇溶剂体系银纳米粒子具有较高的吸收强度。透射电子显微镜结果表明所得到的银纳米粒子具有球状形貌特征,且具有较窄的尺寸分布。Silver nanoparticles were synthesized using polyvinylpyrrolidone （PVP） as the stabilizer, AgNO3 as the precursor, water, ethanol and N, N-dimethylformamide as the solvent. Kinetic processes of the silver nanoparticles formation were measured through UV-Vis absorption spectroscopy. The results show that silver nanoparticles could not be obtained using water as solvent, on the other hand, apparent surface plasmon absorption peaks ranged in 410nm for silver nanoparticles could be observed using ethanol and N, N-dimethylformamide as mlvent. Much stronger absorption intensity could be observed on kinetic curves in the case of the ethanol system. TEM results show that the synthesized silver nanoparticles with a narrow size distribution represent spherical morphological features.

关 键 词：聚乙烯吡咯烷酮 乙醇 N N-二甲基甲酰胺 银纳米粒子 

分 类 号：TB383[一般工业技术—材料科学与工程]