单分散的银纳米粒子的制备及表征  

Synthesis and characterization of monodispersed Ag nanoparticles

作　　者：王静[1,2] 刘亚君[1] 胡爱云[1] 顾维闰[1] 孙龙[1] 

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003 [2]江苏现代造船技术有限公司,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2010年第4期350-352,共3页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：江苏省自然科学基金资助项目(BK2009721)

摘　　要：以组氨酸为稳定剂,通过加入NaBH4还原AgNO3溶液来制备银纳米粒子,得到平均粒径为5 nm左右的粒子.讨论了Ag+/组氨酸摩尔比、溶液pH等因素对银纳米粒子尺寸和吸收光谱的影响.用紫外可见光谱、透射电镜等测试方法对所制得的银纳米粒子进行表征.实验结果表明制备所得纳米银粒子具有较好的单分散性和良好的稳定性.The Ag nanoparitcles with 5 nm diameter were produced by the reduction of AgNO3 with NaBH4 in the presence of stabilizer histidine.Influences of the mole ratios of Ag^＋to histidine,pH values of solution on the sizes and absorption spectra of the prepared Ag nanpoparticles were studied.The Ag nanoparticles were characterized by UV-vis spectrometer and transmission electron microscopy（TEM）.It is shown that the prepared silver nanoparticles are monodispersed and with good stability.

关 键 词：纳米粒子 氨基酸 稳定性 

分 类 号：O657[理学—分析化学]