利用化学还原法及在超声波辅助条件下，以 AgNO3为反应原料，选用羧甲基纤维素钠为稳定剂，柠檬酸钠为还原剂，通过超声波辅助控制反应条件，制备出了分散性好、粒径较窄的银纳米粒子。利用紫外-可见分光光度计(UV-Vis)、透射电子显微镜(TEM)、X射线光电子能谱仪(XPS)等表征手段对银纳米粒子进行分析，结果表明，超声波辅助条件下制备的Ag纳米粒子形貌为均一球形，其粒径范围在10~20 nm之间。
Silver nanoparticles were synthesized from AgNO3 by an ultrasonic-assisted chemical reduction process with additive of carboxymethyl cellulose sodium (CMC)as a stabilizing reagent in a water bath.Sodium citrate was employed as a reducing reagent.When the reactive process was radiated by ultrasonic,silver nanop-articles were gained with a narrow particle size and good dispersion.Silver nanoparticles were characterized by ultraviolet visible (UV-Vis)spectrophotometer,transmission electron microscopy(TEM),X-ray photoelectron spectrometer(XPS).The results show that silver nanoparticles prepared by ultrasonic assisted process are uni-form spherical which have narrow particle size distribution(10-20 nm).
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