Department of Chemistry, Washington University, Saint Louis, Missouri 63130-4899, United States.
ACS Nano. 2013 May 28;7(5):3844-53. doi: 10.1021/nn400414h. Epub 2013 Apr 17.
Various additives are employed in the polyol synthesis of silver nanowires (Ag NWs), which are typically halide salts such as NaCl. A variety of mechanistic roles have been suggested for these additives. We now show that the early addition of NaCl in the polyol synthesis of Ag NWs from AgNO3 in ethylene glycol results in the rapid formation of AgCl nanocubes, which induce the heterogeneous nucleation of metallic Ag upon their surfaces. Ag NWs subsequently grow from these nucleation sites. The conclusions are supported by studies using ex situ generated AgCl nanocubes.
在银纳米线（AgNWs）的多元醇合成中，通常会使用各种添加剂，这些添加剂一般是卤化物盐，如 NaCl。这些添加剂具有多种不同的作用机制。我们现在证明，在乙二醇中用 AgNO3 合成 AgNWs 的多元醇合成中，早期加入 NaCl 会导致 AgCl 纳米立方体的快速形成，AgCl 纳米立方体在其表面诱导了金属 Ag 的异质成核。AgNWs 随后从这些成核位点生长。这一结论得到了使用原位生成的 AgCl 纳米立方体进行的研究的支持。
