摘要
采用化学还原法制备纳米银粒子,制备过程先后使用两种保护剂,用聚乙烯吡咯烷酮(PVP)作保护剂、N,N二甲基甲酰胺(DMF)作还原剂,还原硝酸银溶液得到纳米银粒子.该体系的还原主要通过煮沸法进行;以聚乙二醇(PEG)作为保护剂、还原剂、稳定剂和反应介质,还原硝酸银溶液得到纳米银粒子,并且对所制备的纳米银粒子分别用紫外光谱、荧光光谱、X射线衍射、做了详细地表征.
Silver nanoparticles were synthesized by using two stabilizer.In the case of using PVP as a stabilizer,silver nanoparticles were synthesized by boiling AgNO_3 in N,Ndimethyl formamide.Mixing the AgNO_3 and polyethylene glycol in the dark,silver nanoparticles were got due to the stabilization and reduction of polyethylene glycol.At last,silver nanoparticles were exactly characterized by UVVis spectrophotometry,fluorescence spectroscopy and XRD analysis.
出处
《兰州交通大学学报》
CAS
2005年第3期154-158,共5页
Journal of Lanzhou Jiaotong University
关键词
纳米银
化学还原法制备
荧光光谱
silver nanoparticle
chemical preparation
absorbance spectro