化学还原法制备纳米银粒子及其表征

Preparation and characteristic of silver nanoparticles by chemical reduction

采用化学还原法,通过一系列条件实验,借助紫外-可见分光光度计(UV-vis)得到最佳实验条件,在最佳实验条件下制得紫黑色溶胶,在40℃下真空干燥3h,获纳米银粉。制备的纳米银粉用X射线衍射仪(XRD)和透射电镜(TEM)分析表明,其粒径大小分布范围窄,形状为单一球形,平均粒径为18nm。

Black sols were synthesized from AgNO3 by chemical reduction method under the best experiment condition which is gained from a series of factor experiments by ultraviolet visible （UV-vis） spectrophotometer. Nano-silver powder was acquired by vacuum-dryness at 40℃ for 3h. Nano-silver particles were characterized X-ray diffraction （XRD） and Transmission electron microscope （TEM）. The results show that we have succefully prepared nano-silver particles which have narrow particle size distribution, single shape and a mean particle size of 18nm.