Li Y, Duan X, Qian Y, Yang L, Liao H
Department of Chemistry and Structure Research Laboratory, University of Science and Technology of China (USTC), Hefei, Anhui, 230026, People's Republic of China
J Colloid Interface Sci. 1999 Jan 15;209(2):347-349. doi: 10.1006/jcis.1998.5879.
Nanocrystalline silver particles with an average size of 15 nm have been prepared by reducing Ag(NH3)+2 with N2H4. H2O, with sodium dodecylbenzene sulfate (DBS) used as the stabilizing agent. The influence of DBS in the reaction is discussed. When the so-prepared silver particles were observed in situ under a transmission electron microscope, we observed an agglomeration and sputtering phenomenon induced by the electron beam. The possible reason for agglomeration and sputtering is proposed. Silver crystals of hexagonal shape, ranging from 20- to 120-nm in size, were formed on a copper grid. This phenomenon may offer a useful means of forming small particles. Copyright 1999 Academic Press.
通过用N₂H₄·H₂O还原Ag(NH₃)₂⁺制备了平均尺寸为15nm的纳米晶银颗粒，使用十二烷基苯磺酸钠（DBS）作为稳定剂。讨论了DBS在反应中的影响。当在透射电子显微镜下原位观察如此制备的银颗粒时，我们观察到了由电子束引起的团聚和溅射现象。提出了团聚和溅射的可能原因。在铜网上形成了尺寸范围为20至120nm的六边形银晶体。这种现象可能提供了一种形成小颗粒的有用方法。版权所有1999年学术出版社。
