化学还原法制备银纳米颗粒

Preparation of Silver Nanoparticles by Chemical Reduction Method

在70℃时采用聚乙烯吡咯烷酮(PVP)和氢氧化钠的混合水溶液,利用葡萄糖还原硝酸银制备了银纳米颗粒。采用X射线衍射(XRD)、能量分散谱(EDS)和扫描电子显微镜(SEM)对所制备的银纳米颗粒进行了表征。结果表明该法制备的银颗粒为纯的银纳米颗粒,呈球形,粒径分布集中在20～50 nm之间。

Silver nanoparticles are prepared by reduction of aqueous solution of AgNO3 in the presence of polyvinylpyrrolidone （PVP） and NaOH at the temperature of 70 ℃, glucose was used for the reduction agent. The silver nanoparticles were characterized by using X-ray diffraction （XRD）, energy dispersive spectrometer（EDS） and scanning electron microscope （SEM）. The results showed that the silver nanoparticles produced by this method are pure and spherical with narrow-dispersed size distribution ranging from 20 nm to 40 nm.